Crash when opening the DatabaseEditor

**Describe the bug**
I had to reinstall everything on my working laptop, and everytime i try to open the DataBaseEditor i get a Crash.

```
Unity.ResolutionFailedException: Resolution failed with error: Exception has been thrown by the target of an invocation.

For more detailed information run Unity in debug mode: new UnityContainer().AddExtension(new Diagnostic())
---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
---> Unity.ResolutionFailedException: Resolution failed with error: Exception has been thrown by the target of an invocation.

For more detailed information run Unity in debug mode: new UnityContainer().AddExtension(new Diagnostic())
---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
---> System.NullReferenceException: Object reference not set to an instance of an object.
at WDE.DbcStore.Spells.Tbc.TbcSpellService.get_SpellCount()
at WDE.DbcStore.DbcStore.get_SpellCount()
at WDE.Spells.MergedSpellService.Cache()
at WDE.Spells.MergedSpellService..ctor(ISpellService[] services)
at WDE.Spells.SpellStore..ctor(IDbcSpellService dbcSpellService, IDatabaseSpellService databaseSpellService)
at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
at System.Reflection.MethodBaseInvoker.InvokeDirectByRefWithFewArgs(Object obj, Span`1 copyOfArgs, BindingFlags invokeAttr)
--- End of inner exception stack trace ---
at System.Reflection.MethodBaseInvoker.InvokeDirectByRefWithFewArgs(Object obj, Span`1 copyOfArgs, BindingFlags invokeAttr)
at System.Reflection.MethodBaseInvoker.InvokeWithFewArgs(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.Reflection.ConstructorInfo.Invoke(Object[] parameters)
at Unity.Processors.ConstructorProcessor.<>c__DisplayClass16_0.b__0(BuilderContext& c)
at Unity.Processors.MemberProcessor`2.<>c__DisplayClass8_0.b__0(BuilderContext& c)
at Unity.Processors.MemberProcessor`2.<>c__DisplayClass8_0.b__0(BuilderContext& c)
at Unity.Processors.MemberProcessor`2.<>c__DisplayClass8_0.b__0(BuilderContext& c)
at Unity.UnityContainer.<>c__DisplayClass113_0.b__0(BuilderContext& c)
at Unity.Strategies.BuildPlanStrategy.PreBuildUp(BuilderContext& context)
at Unity.UnityContainer.<>c.<.ctor>b__73_1(BuilderContext& context)
--- End of inner exception stack trace ---
at Unity.UnityContainer.<>c.<.ctor>b__73_1(BuilderContext& context)
at Unity.UnityContainer.Unity.IUnityContainer.Resolve(Type type, String name, ResolverOverride[] overrides)
at WDE.Module.ModuleBase.<>c__DisplayClass8_0.b__0(IUnityContainer c)
at Unity.UnityContainerExtensions.<>c__DisplayClass34_0.b__0(IUnityContainer c, Type t, String n)
at Unity.Injection.InjectionFactory.b__3_2[TContext,TPolicySet](TContext& c)
at Unity.Strategies.BuildPlanStrategy.PreBuildUp(BuilderContext& context)
at Unity.UnityContainer.<>c.<.ctor>b__41_4(BuilderStrategy[] chain, BuilderContext& context)
at Unity.Builder.BuilderContext.Resolve(Type type, String name, InternalRegistration registration)
at Unity.Builder.BuilderContext.Resolve(Type type, String name)
at Unity.Builder.BuilderContext.Resolve(ParameterInfo parameter, Object value)
at Unity.Processors.ParametersProcessor`1.<>c__DisplayClass7_0.b__0(BuilderContext& context)
at Unity.Processors.ConstructorProcessor.<>c__DisplayClass16_0.b__0(BuilderContext& c)
at Unity.Processors.MemberProcessor`2.<>c__DisplayClass8_0.b__0(BuilderContext& c)
at Unity.Processors.MemberProcessor`2.<>c__DisplayClass8_0.b__0(BuilderContext& c)
at Unity.Processors.MemberProcessor`2.<>c__DisplayClass8_0.b__0(BuilderContext& c)
at Unity.UnityContainer.<>c__DisplayClass113_0.b__0(BuilderContext& c)
at Unity.Strategies.BuildPlanStrategy.PreBuildUp(BuilderContext& context)
at Unity.UnityContainer.<>c.<.ctor>b__41_4(BuilderStrategy[] chain, BuilderContext& context)
at Unity.Builder.BuilderContext.Resolve(Type type, String name, InternalRegistration registration)
at Unity.UnityContainer.ResolveEnumerable[TElement](Func`4 resolve, String name)+MoveNext()
at WDE.Solutions.Manager.SolutionItemNameRegistry..ctor(IEnumerable`1 providers, IEnumerable`1 asyncProviders)
at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
at System.Reflection.MethodBaseInvoker.InvokeDirectByRefWithFewArgs(Object obj, Span`1 copyOfArgs, BindingFlags invokeAttr)
--- End of inner exception stack trace ---
at System.Reflection.MethodBaseInvoker.InvokeDirectByRefWithFewArgs(Object obj, Span`1 copyOfArgs, BindingFlags invokeAttr)
at System.Reflection.MethodBaseInvoker.InvokeWithFewArgs(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.Reflection.ConstructorInfo.Invoke(Object[] parameters)
at Unity.Processors.ConstructorProcessor.<>c__DisplayClass16_0.b__0(BuilderContext& c)
at Unity.Processors.MemberProcessor`2.<>c__DisplayClass8_0.b__0(BuilderContext& c)
at Unity.Processors.MemberProcessor`2.<>c__DisplayClass8_0.b__0(BuilderContext& c)
at Unity.Processors.MemberProcessor`2.<>c__DisplayClass8_0.b__0(BuilderContext& c)
at Unity.UnityContainer.<>c__DisplayClass113_0.b__0(BuilderContext& c)
at Unity.Strategies.BuildPlanStrategy.PreBuildUp(BuilderContext& context)
at Unity.UnityContainer.<>c.<.ctor>b__41_4(BuilderStrategy[] chain, BuilderContext& context)
at Unity.Builder.BuilderContext.Resolve(Type type, String name, InternalRegistration registration)
at Unity.Builder.BuilderContext.Resolve(Type type, String name)
at Unity.Builder.BuilderContext.Resolve(ParameterInfo parameter, Object value)
at Unity.Processors.ParametersProcessor`1.<>c__DisplayClass7_0.b__0(BuilderContext& context)
at Unity.Processors.ConstructorProcessor.<>c__DisplayClass16_0.b__0(BuilderContext& c)
at Unity.Processors.MemberProcessor`2.<>c__DisplayClass8_0.b__0(BuilderContext& c)
at Unity.Processors.MemberProcessor`2.<>c__DisplayClass8_0.b__0(BuilderContext& c)
at Unity.Processors.MemberProcessor`2.<>c__DisplayClass8_0.b__0(BuilderContext& c)
at Unity.UnityContainer.<>c__DisplayClass113_0.b__0(BuilderContext& c)
at Unity.Strategies.BuildPlanStrategy.PreBuildUp(BuilderContext& context)
at Unity.UnityContainer.<>c.<.ctor>b__41_3(BuilderContext& context)
--- End of inner exception stack trace ---
at Unity.UnityContainer.<>c.<.ctor>b__41_3(BuilderContext& context)
at Unity.UnityContainer.Unity.IUnityContainer.Resolve(Type type, String name, ResolverOverride[] overrides)
at Prism.Unity.Ioc.UnityContainerExtension.Resolve(Type type)
at WDE.Common.Modules.BaseScopedContainer.Resolve(Type type)
at WDE.Module.ScopedModuleBase.RegisterToParentScope(Assembly assembly, IContainerRegistry parentContainer)
at WDE.Module.ScopedModuleBase.FinalizeRegistration(IContainerRegistry container)
at WDE.MangosEventAiEditor.EventAiModule.FinalizeRegistration(IContainerRegistry container)
at WoWDatabaseEditorCore.Avalonia.App.OnInitializedAsync()
at WoWDatabaseEditorCore.Avalonia.App.OnFrameworkInitializationCompletedAsync()
at WoWDatabaseEditorCore.Avalonia.App.g__Load|25_0()

COMMIT=e93bbca6381c61baa12e5bb92ca1df395e3f56b4
BRANCH=master
VERSION=0.1.2959
BUILD_VERSION=2959
UPDATE_SERVER=https://dbeditor.ovh
MARKETPLACE=default
MAPDATA_SERVER=https://dbeditor.ovh
PLATFORM=Windows
```

**Version (commit hash)**
Please include what was the WoW Database Editor version (commit hash). **If you downloaded binary, open file COMMIT_HASH from the main folder and paste the content in the issue description**

If you have built the binary yourself, check commit hash with `git rev-parse HEAD`

Downloaded the app Yesterday from https://ci.appveyor.com/api/projects/BAndysc/wowdatabaseeditor/artifacts/WoWDatabaseEditorWindows.zip?branch=master

Installed the https://dotnet.microsoft.com/download/dotnet/8.0 SDK 8.0.414 yesterday

Start by reproducing the crash when opening DatabaseEditor using commit e93bbca6381c61baa12e5bb92ca1df395e3f56b4 and follow the stack trace to WDE.DbcStore.Spells.Tbc.TbcSpellService.get_SpellCount(). Trace how that value is reached through WDE.DbcStore.DbcStore, WDE.Spells.MergedSpellService.Cache(), and WoWDatabaseEditorCore.Avalonia.App.OnInitializedAsync(). Done means the editor opens without the reported NullReferenceException.

Written by the indexing model from the issue text.