[release/7.0] Allow interop resolvers to return self handle

[github-actions]

Backport of #78004 to release/7.0

/cc @lambdageek @am11

Customer Impact

Customers using the new GetMainProgramHandle API to create custom NativeLibrary resolvers in mobile apps are unable to resolve statically linked symbols in their apps.

Testing

Manual testing

Risk

Low

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Issue Details

---

Backport of #78004 to release/7.0

/cc @lambdageek @am11

Customer Impact

Testing

Risk

IMPORTANT: Is this backport for a servicing release? If so and this change touches code that ships in a NuGet package, please make certain that you have added any necessary package authoring and gotten it explicitly reviewed.

Author:	github-actions[bot]
Assignees:	-
Labels:	area-AssemblyLoader-mono
Milestone:	-

[carlossanlop]

@lambdageek @thaystg can one of you please send an email to Tactics requesting approval? The due date for merging changes for the December release is Monday 14th.

[lambdageek]

emailed tactics

[lambdageek]

Approved by tactics in email

[carlossanlop]

Approved by Tactics and signed off by area owner.
No OOB package authoring changes needed.
CI failure is known and unrelated: #75018
Ready to merge.

[akoeplinger]

This seems to have completely broken Android in CI (we didn't run Android library tests on this PR).

11-11 18:46:17.959 19813 19830 D DOTNET  : ((null) warning) Process terminated.
11-11 18:46:17.959 19813 19830 D DOTNET  : ((null) warning) Encountered infinite recursion while looking up resource 'Arg_EntryPointNotFoundException' in System.Private.CoreLib. Verify the installation of .NET is complete and does not need repairing, and that the state of the process has not become corrupted.
11-11 18:46:17.959 19813 19830 F libc    : Fatal signal 6 (SIGABRT), code -1 (SI_QUEUE) in tid 19830 (.dot.MonoRunner), pid 19813 (ot.Common.Tests)

We don't see the issue in main so looks like something is missing from 7.0. Preparing a revert for now.

[am11]

Looks like the case of trimmed app missing string resource. Do we have dumps / more info for this crash?

[am11]

Looks like the case of trimmed app missing string resource.

in which case, this should fix the error:

--- a/src/libraries/System.Private.CoreLib/src/System/AppDomain.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/AppDomain.cs
@@ -135,12 +135,14 @@ private static int ExecuteAssembly(Assembly assembly, string?[]? args)
             return result != null ? (int)result : 0;
         }
 
+        [RequiresUnreferencedCode("Type and its constructor could be removed")]
         public int ExecuteAssemblyByName(AssemblyName assemblyName, params string?[]? args) =>
             ExecuteAssembly(Assembly.Load(assemblyName), args);
 
         public int ExecuteAssemblyByName(string assemblyName) =>
             ExecuteAssemblyByName(assemblyName, null);
 
+        [RequiresUnreferencedCode("Type and its constructor could be removed")]
         public int ExecuteAssemblyByName(string assemblyName, params string?[]? args) =>
             ExecuteAssembly(Assembly.Load(assemblyName), args);