CompilerApp cannot build textures in OpenGLES (Android)

Release Type: Official Release

Version: 4.2.0.2188+

Platform(s): Compiling for Android

Describe the bug
Building under Android, the CompilerApp throws errors like:

2>EXEC : error 11.839s: [AssetCompiler] Exception in command [Textures/stride_box_occlusion] Stride.Assets.Textures.TextureConvertParameters: System.NullReferenceException: Object reference not set to an instance of an object.
2>   at Stride.TextureConverter.TexLibraries.FITexLib.EndLibrary(TexImage image) in C:\BuildAgent\work\b5f46e3c4829a09e\sources\tools\Stride.TextureConverter\Backend\TexLibraries\FITexLib.cs:line 101
2>   at Stride.TextureConverter.TexImage.Dispose() in C:\BuildAgent\work\b5f46e3c4829a09e\sources\tools\Stride.TextureConverter\Frontend\TexImage.cs:line 352
2>   at Stride.Assets.Textures.TextureAssetCompiler.TextureConvertCommand.DoCommandOverride(ICommandContext commandContext) in C:\BuildAgent\work\b5f46e3c4829a09e\sources\engine\Stride.Assets\Textures\TextureAssetCompiler.cs:line 87
2>   at Stride.Core.BuildEngine.CommandBuildStep.StartCommand(IExecuteContext executeContext, ListStore`1 commandResultEntries, BuilderContext builderContext) in C:\BuildAgent\work\b5f46e3c4829a09e\sources\buildengine\Stride.Core.BuildEngine.Common\CommandBuildStep.cs:line 304
2>EXEC : error 11.839s: [AssetCompiler] BuildStep [Textures/stride_box_occlusion] Stride.Assets.Textures.TextureConvertParameters failed.
2>EXEC : error 11.839s: [AssetCompiler] Exception in command [Textures/stride_box_occlusion] Stride.Assets.Textures.TextureConvertParameters: System.NullReferenceException: Object reference not set to an instance of an object.
2>   at Stride.TextureConverter.TexLibraries.FITexLib.EndLibrary(TexImage image) in C:\BuildAgent\work\b5f46e3c4829a09e\sources\tools\Stride.TextureConverter\Backend\TexLibraries\FITexLib.cs:line 101
2>   at Stride.TextureConverter.TexImage.Dispose() in C:\BuildAgent\work\b5f46e3c4829a09e\sources\tools\Stride.TextureConverter\Frontend\TexImage.cs:line 352
2>   at Stride.Assets.Textures.TextureAssetCompiler.TextureConvertCommand.DoCommandOverride(ICommandContext commandContext) in C:\BuildAgent\work\b5f46e3c4829a09e\sources\engine\Stride.Assets\Textures\TextureAssetCompiler.cs:line 87
2>   at Stride.Core.BuildEngine.CommandBuildStep.StartCommand(IExecuteContext executeContext, ListStore`1 commandResultEntries, BuilderContext builderContext) in C:\BuildAgent\work\b5f46e3c4829a09e\sources\buildengine\Stride.Core.BuildEngine.Common\CommandBuildStep.cs:line 304
2>EXEC : error 11.839s: [AssetCompiler] BuildStep [Textures/stride_box_occlusion] Stride.Assets.Textures.TextureConvertParameters failed.
2>EXEC(1,1): error 11.840s: [AssetCompiler] Asset [Textures/stride_box_occlusion] failed to compile
2>EXEC : error 11.840s: [AssetCompiler] BuildStep Asset build steps [TextureAsset:'Textures/stride_box_occlusion'] (1 items) failed.

To Reproduce
Steps to reproduce the behavior:

1. Create Top-Down RPG template
2. Build for Android (must do build through Visual Studio, Game Studio is broken on detecting Android)

Expected behavior
Build

Additional context
Caused by #2342
Reverting this commit allows the texture(s) to build again

Start with Stride.TextureConverter/TexLibraries/FITexLib.cs at EndLibrary line 101 and trace the disposal path through TexImage.cs line 352. Reproduce the failure by building the Top-Down RPG template for Android through Visual Studio, then inspect TextureAssetCompiler.cs line 87. Done means the Android texture build completes without the reported NullReferenceException.