[clang] [clang-format] Fix crash involving array designators and dangling comma (PR #77045)

[Owen Pan via cfe-commits]

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@@ -21084,6 +21084,12 @@ TEST_F(FormatTest, CatchAlignArrayOfStructuresLeftAlignment) {
       "};",
       Style);
 
+  verifyNoCrash("Foo f[] = {\n"
+                "    [0] = { 1, },\n"
+                "    [1] { 1, },\n"
+                "};",
+                Style);
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owenca wrote:

We should also add it to `CatchAlignArrayOfStructuresRightAlignment`.

https://github.com/llvm/llvm-project/pull/77045