Remove strict verifyContext invocation from hash_map implementation.

[cdeler]

Fixes #19640

In this PR I'm trying to remove the strict verifyContext from lib/std/hash_map.zig

How I tested locally

(1) I was able to successfully built the minimal viable test sample from the origin ticket #19640 :

➜  build git:(cdeler_strict_verifyContext_HashTable) ./stage4/bin/zig build-exe cdeler_test/test_minimal.zig
➜  build git:(cdeler_strict_verifyContext_HashTable) echo $?
0

(2) but without the change (upstream zig 0.13.0 from HomeBrew) I still have the error:

➜  build git:(cdeler_strict_verifyContext_HashTable) zig version
0.13.0
➜  build git:(cdeler_strict_verifyContext_HashTable) zig build-exe cdeler_test/test_minimal.zig
/opt/homebrew/Cellar/zig/0.13.0/lib/zig/std/hash_map.zig:340:13: error: Problems found with hash context type hash_map.StringContext:
                                                                          hash_map.StringContext.hash must be fn (self, []u8) u64
                                                                            but is actually fn (hash_map.StringContext, []const u8) u64
                                                                            Second parameter must be []u8, but is []const u8
                                                                          hash_map.StringContext.eql must be fn (self, []u8, []const u8) bool
                                                                            but is actually fn (hash_map.StringContext, []const u8, []const u8) bool
                                                                            Second parameter must be []u8, but is []const u8
            @compileError("Problems found with hash context type " ++ @typeName(Context) ++ ":" ++ errors);
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/homebrew/Cellar/zig/0.13.0/lib/zig/std/hash_map.zig:1174:35: note: called from here
            comptime verifyContext(@TypeOf(ctx), @TypeOf(key), K, Hash, false);
                     ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/homebrew/Cellar/zig/0.13.0/lib/zig/std/hash_map.zig:1337:48: note: called from here
                    const index = self.getIndex(key, key_ctx) orelse return err;
                                  ~~~~~~~~~~~~~^~~~~~~~~~~~~~
referenced by:
    getOrPutAdapted__anon_1630: /opt/homebrew/Cellar/zig/0.13.0/lib/zig/std/hash_map.zig:501:57
    main: cdeler_test/test_minimal.zig:11:45
    remaining reference traces hidden; use '-freference-trace' to see all reference traces

(3) std-lib test suite for OS X aarch passed:

➜  build git:(cdeler_strict_verifyContext_HashTable) ✗ ./stage4/bin/zig build test-std -Dskip-release -Dskip-non-native
➜  build git:(cdeler_strict_verifyContext_HashTable) ✗ echo $?
0