[iOS][globalization] Implement `IgnoreSymbols` compare option for string collation APIs on iOS

[matouskozak]

Based on the current documentation

As there is no IgnoreSymbols equivalent in NSStringCompareOptions all CompareOptions combinations that include IgnoreSymbols throw PlatformNotSupportedException.

runtime/src/libraries/System.Private.CoreLib/src/System/Globalization/CompareInfo.iOS.cs

Lines 76 to 87 in 2987aba

	private static void AssertComparisonSupported(CompareOptions options)
	{
	if ((options | SupportedCompareOptions) != SupportedCompareOptions)
	throw new PlatformNotSupportedException(GetPNSE(options));
	}
	private const CompareOptions SupportedCompareOptions = CompareOptions.None | CompareOptions.IgnoreCase | CompareOptions.IgnoreNonSpace |
	CompareOptions.IgnoreWidth | CompareOptions.StringSort | CompareOptions.IgnoreKanaType;
	private static string GetPNSE(CompareOptions options) =>
	SR.Format(SR.PlatformNotSupported_HybridGlobalizationWithCompareOptions, options);
	}

We should remove the exception throw for IndexOf and other APIs using IgnoreSymbols compare option and implement a workaround to enable this API. Due to no NSStringCompareOptions that would mimic the same behavior as .NET IgnoreSymbols we will likely need to:

1. Preprocess the strings by removing the symbols (comma, period, colon, etc.).
2. Calculate the range on the preprocessed strings.
3. Map the range from preprocessed strings back to the input string to get correct index and matchLength.

Add more test cases:

runtime/src/libraries/System.Runtime/tests/System.Globalization.Tests/CompareInfo/CompareInfoTests.IndexOf.cs

Lines 79 to 80 in 10f0bbf

	if (PlatformDetection.IsNotHybridGlobalizationOnApplePlatform) // IgnoreSymbols are not supported
	yield return new object[] { s_invariantCompare, "More Test's", "Tests", 0, 11, CompareOptions.IgnoreSymbols, 5, 6 };

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