CodeQL emits error when binlog does not contain compilation

**Description of the issue**
An error is emitted when creating a database with the `-Obinlog` option using a `binlog` file that _does not_ contain any compilation.

Repro steps:
1. Download and extract [codeql-binlog-min-repro.zip](https://github.com/user-attachments/files/17736274/codeql-binlog-min-repro.zip) (contains two files: `global.json` and `NoTargetsProject.csproj`) to some directory.
2. In said directory, run `msbuild.exe /t:restore;build /bl`.
3. Run `codeql.exe database create --language=csharp --build-mode=none -Obinlog=msbuild.binlog`
4. Observe the following error (note that I've generalized some personal file paths):
```
Initializing database at C:\Users\DSHEPE~1\AppData\Local\Temp\CodeQL_CB_DB2.
Running build command: []
Running command in D:\repos\test: [\codeql\csharp\tools\autobuild.cmd]
[2024-11-13 12:00:24] [build-stdout] CodeQL C# autobuilder
[2024-11-13 12:00:24] [build-stdout] Working directory: D:\repos\test
[2024-11-13 12:00:25] [ERROR] Spawned process exited abnormally (code 2; tried to run: [codeql\tools\win64\runner.exe, cmd.exe, /C, type, NUL, &&, \codeql\csharp\tools\autobuild.cmd])
A fatal error occurred: Exit status 2 from command: [\codeql\tools\win64\runner.exe, cmd.exe, /C, type, NUL, &&, \codeql\csharp\tools\autobuild.cmd]
```

Can this scenario be treated as a no-op, with just a message emitted that no compilations were found in the binlog?

cc: @tamasvajk

global.json、NoTargetsProject.csproj、msbuild.binlog、および提供された codeql-binlog-min-repro.zip を使ってシナリオを再現し、その後 -Obinlog と --build-mode=none を指定してデータベース作成コマンドを実行します。binlog にコンパイルがない場合の C# autobuild.cmd パスを追跡することから始めます。このケースで、エラー終了する代わりにコンパイルが見つからなかったことが報告されれば完了です。

索引モデルが issue の本文から書いたものです。