Fix object-expr untested cases

[edgarfgp]

Description

Continuation of #17388

Found some cases that weren't covered/tested before

Checklist

• Test cases added

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cc @dotnet/fsharp-team-msft

[edgarfgp]

This is ready.

[psfinaki]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).

[KevinRansom]

These test cases seem to verify that the compiler compiles the source code without producing errors, could we also verify that the built type has the interface. Adding a main with a cast and executing is probably sufficient.

I'm confident it does, but a test that confirms it might be useful.

[edgarfgp]

These test cases seem to verify that the compiler compiles the source code without producing errors, could we also verify that the built type has the interface. Adding a main with a cast and executing is probably sufficient.

I'm confident it does, but a test that confirms it might be useful.

Done 👍🏻

Addressed