[release/10.0] [Blazor] Fix metadata comments incorrectly being processed as logical elements

[github-actions]

Backport of #64529 to release/10.0

/cc @javiercn

[Blazor] Fix metadata comments incorrectly being processed as logical elements

Summary of the changes (Less than 80 chars)

Description

{Detail}

Fixes #{bug number} (in this specific format)

Customer Impact

{Justification}

Regression?

• Yes
• No

[If yes, specify the version the behavior has regressed from]

Risk

• High
• Medium
• Low

[Justify the selection above]

Verification

• Manual (required)
• Automated

Packaging changes reviewed?

• Yes
• No
• N/A

---

When servicing release/2.3

• Make necessary changes in eng/PatchConfig.props

[dotnet-policy-service]

Looks like this PR hasn't been active for some time and the codebase could have been changed in the meantime.
To make sure no conflicting changes have occurred, please rerun validation before merging. You can do this by leaving an /azp run comment here (requires commit rights), or by simply closing and reopening.