Hash code tests cleanup

[ilonatommy]

Moving tests around after #96354 and before PR with new SortKey tests. We have a bunch of mixed - purpose tests in CompareInfoTests.cs that can be categorized as SortKey or HashCode. This PR:

• moves tests to files according to their category,
• removes non-necessary comments,
• removes duplicated test data (for en-GB)
• adds yield return new object[] { s_invariantCompare, "igloo", "\u0130GLOO", CompareOptions.None }; case, we did not test None at all previously.,
• enables a few tests that were fixed by Limit PNSE by using Invariant HashCode in HybridGlobalization #96354.

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Issue Details

---

Moving tests around after #96354 and before PR with new SortKey tests. We have a bunch of mixed - purpose tests in CompareInfoTests.cs that can be categorized as SortKey or HashCode. This PR:

• moves tests to files according to their category,
• removes non-necessary comments,
• removes duplicated test data (for en-GB)
• adds yield return new object[] { s_invariantCompare, "igloo", "\u0130GLOO", CompareOptions.None }; case, we did not test None at all previously.

Author:	ilonatommy
Assignees:	ilonatommy
Labels:	arch-wasm, area-System.Globalization, test-enhancement
Milestone:	-

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[ilonatommy]

/azp run runtime-wasm-libtests

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