[clang-tools-extra] [clangd] Add designator hints for parenthesis aggregate initialization (PR #170642)

[Nathan Ridge via cfe-commits]

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@@ -1822,6 +1821,63 @@ TEST(DesignatorHints, NoCrash) {
                         ExpectedHint{".b=", "b"});
 }
 
+TEST(DesignatorHints, BasicParenInit) {
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HighCommander4 wrote:

nit: I would drop `Basic` from the names of all new tests added in this patch. `DesignatorHints.ParenInit`, `DesignatorHints.ParenInitDerived` etc. seem descriptive enough, and there aren't any tests that are "not basic" to contrast with "basic".

https://github.com/llvm/llvm-project/pull/170642