[release/9.0.1xx] [Static web assets] Reduce allocations on DefineStaticWebAssetEndpoints

[github-actions]

Backport of #43038 to release/9.0.1xx

/cc @javiercn

Reduce allocations during the Evaluation phase in VS as well as during DefineStaticWebAssetEndpoints.

Description

• A large item group defined in the SDK was causing excessive glob evaluation.
• We moved the majority of the definitions in that item group into the task that uses them as a set of defaults.
• This removes the majority of the evaluations (~90%), removing the need to evaluate a large set of items.

Fixes 2164225

Customer Impact

Excessive allocations in large solutions require more memory, introducing more frequent GC pauses in Visual Studio, slowing down interaction.

Regression?

• Yes
• No

8.0.xxx

Risk

• High
• Medium
• Low

There are lots of automated tests that make sure we haven't regressed any existing scenario with the fix.

Verification

• Manual (required)
• Automated

Packaging changes reviewed?

• Yes
• No
• N/A

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[marcpopMSFT]

@javiercn @MackinnonBuck you can merge whenever though the file list is different then main so may want to check that.

[javiercn]

@marcpopMSFT Yes, we missed a typo in the original PR and addressed it on a follow up PR. So we just cherry-picked the commit from the follow up.