Rebase Remove function implementation onto latest main

[Copilot]

Rebases the Remove function implementation from PR #2808 onto the latest main branch, resolving conflicts and adapting to interface changes that occurred since the original PR.

Core Changes

Interface Migration

• Migrated RemoveImpl and RemoveAllImpl from IAsyncTexlFunction3 to IFunctionInvoker
• Updated MutationUtils.RemoveCore signature from (FormulaType irContext, FormulaValue[] args) to (FunctionInvokeInfo invokeInfo)

Duplicate Removal Fix

• Changed CollectionTableValue.RemoveAsync to use HashSet<int> for tracking deletions instead of List<T>
• Converts enumerable to array before processing to enable index-based tracking
• Resolves hash key issues when using T as a hash key

Enum Support

• Added RemoveFlags enum with First and All options
• Registered in BuiltInEnums, LanguageConstants, and EnumStoreBuilder

Function Registration

• Updated PowerFxConfigExtensions to register RemoveImpl and RemoveAllImpl instead of base RemoveFunction

Test Updates

• Updated PADIntegrationTests to use RemoveFlags.All enum instead of string "All"
• Updated Remove_V1Compact.txt test cases

Example Usage

// Remove first matching record
Remove(collection, {Field: "value"})

// Remove all matching records using enum
Remove(collection, {Field: "value"}, RemoveFlags.All)

// Remove multiple records from a table source
Remove(collection, Filter(source, Field > 10), RemoveFlags.All)

Remaining Work

Resource strings in PowerFxResources.en-US.resx need to be added for proper localization and error messages. The implementation functions correctly without them.

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See REBASE_STATUS.md for complete technical details on migration decisions and changes made.

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