[release/6.5] Fix HierarchyId parsing for numbers outside Int32 range

[Copilot]

Port of dotnet/ef6#2359

HierarchyId fails to parse valid IDs containing numbers outside the Int32 range (e.g. SQL Server file table path_locator defaults), throwing ArgumentException due to int.TryParse overflow.

// Previously threw ArgumentException; now works correctly
var hid = HierarchyId.Parse("/239196746533516.54209197962074.2160059995/");

Changes

• HierarchyId.cs: Change _nodes from int[][] to long[][]; switch parsing to long.TryParse; fix new[] { 1 } → new[] { 1L } in GetDescendant
• Rename helpers: IntArrayToStirng → LongArrayToString (IEnumerable<long>); CompareIntArrays → CompareLongArrays (long[], long locals); update all call sites
• HierarchyIdUnitTests.cs: Add tests for parsing IDs with out-of-Int32-range numbers and for comparison operators on large values

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• 4myvsblobprodcus32.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet build src/EntityFramework/EntityFramework.csproj -c Debug (dns block)
• vb4vsblobprodcus33.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet build src/EntityFramework/EntityFramework.csproj -c Debug (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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