Handle nested UDF calls during import migration

[jeskew]

Resolves #12542

The logic that replaces references in imported types, variables, and functions is not currently handling UDF calls within UDF calls, e.g.,

func foo(input string) => input

@export()
func bar(input string) => foo(foo(input))

In the definition of bar, the outer foo call would be migrated (i.e., it would refer to a UDF in a closure namespace (_1.foo)), but the inner foo call would not (i.e., it would refer to a UDF in the __bicep namespace). The compiled expression would end up looking something like "[_1.foo(__bicep.foo(parameters('input')))]", which will fail to evaluate at runtime.

Microsoft Reviewers: Open in CodeFlow

[github-actions]

Test this change out locally with the following install scripts (Action run 7012778224)

VSCode

• Mac/Linux

  bash <(curl -Ls https://aka.ms/bicep/nightly-vsix.sh) --run-id 7012778224

• Windows

  iex "& { $(irm https://aka.ms/bicep/nightly-vsix.ps1) } -RunId 7012778224"

Azure CLI

• Mac/Linux

  bash <(curl -Ls https://aka.ms/bicep/nightly-cli.sh) --run-id 7012778224

• Windows

  iex "& { $(irm https://aka.ms/bicep/nightly-cli.ps1) } -RunId 7012778224"

[github-actions]

Test Results

     132 files  +    1       132 suites  +1   4h 10m 14s ⏱️ - 42m 2s
10 846 tests +    1  10 846 ✔️ +    2  0 💤 ±0  0 ❌  - 1 
52 307 runs  +117  52 307 ✔️ +118  0 💤 ±0  0 ❌  - 1 

Results for commit a28f59c. ± Comparison against base commit 5c2e287.