Remove userDefinedTypes from feature config

[jeskew]

Resolves #12576

The userDefinedTypes property of experimentalFeaturesEnabled in bicepconfig.json hasn't had any effect for several releases, but VS Code will still offer completions for it because it's declared in the file's schema.

Microsoft Reviewers: Open in CodeFlow

[github-actions]

Test this change out locally with the following install scripts (Action run 7009220994)

VSCode

• Mac/Linux

  bash <(curl -Ls https://aka.ms/bicep/nightly-vsix.sh) --run-id 7009220994

• Windows

  iex "& { $(irm https://aka.ms/bicep/nightly-vsix.ps1) } -RunId 7009220994"

Azure CLI

• Mac/Linux

  bash <(curl -Ls https://aka.ms/bicep/nightly-cli.sh) --run-id 7009220994

• Windows

  iex "& { $(irm https://aka.ms/bicep/nightly-cli.ps1) } -RunId 7009220994"

[anthony-c-martin]

Thanks for tidying this up!

[github-actions]

Test Results

     154 files  +     23       154 suites  +23   5h 40m 12s ⏱️ + 47m 56s
10 845 tests ±       0  10 843 ✔️  -        1  0 💤 ±0  2 ❌ +1 
57 292 runs  +5 102  57 290 ✔️ +5 101  0 💤 ±0  2 ❌ +1 

For more details on these failures, see this check.

Results for commit 983d61e. ± Comparison against base commit 5c2e287.

♻️ This comment has been updated with latest results.