[clang-format] Fix poor spacing in AlignArrayOfStructures: Left (#77868)

Fixes #62904

`AlignArrayOfStructures: Left` combined with `SpacesInParentheses: true`
causes the first cell of every row to have 1 additional space.
We were only setting the first cell of the first row to be against the
left brace, now every row will be against the left brace.

Author: XDeme1

clang/lib/Format/WhitespaceManager.cpp

@@ -1366,11 +1366,12 @@ void WhitespaceManager::alignArrayInitializersLeftJustified(
   auto &Cells = CellDescs.Cells;
   // Now go through and fixup the spaces.
   auto *CellIter = Cells.begin();
-  // The first cell needs to be against the left brace.
-  if (Changes[CellIter->Index].NewlinesBefore == 0)
-    Changes[CellIter->Index].Spaces = BracePadding;
-  else
-    Changes[CellIter->Index].Spaces = CellDescs.InitialSpaces;
+  // The first cell of every row needs to be against the left brace.
+  for (const auto *Next = CellIter; Next; Next = Next->NextColumnElement) {
+    auto &Change = Changes[Next->Index];
+    Change.Spaces =
+        Change.NewlinesBefore == 0 ? BracePadding : CellDescs.InitialSpaces;
+  }
   ++CellIter;
   for (auto i = 1U; i < CellDescs.CellCounts[0]; i++, ++CellIter) {
     auto MaxNetWidth = getMaximumNetWidth(

clang/unittests/Format/FormatTest.cpp

@@ -21331,6 +21331,14 @@ TEST_F(FormatTest, CatchAlignArrayOfStructuresLeftAlignment) {
       "00000000000000000000000000000000000000000000000000000000\" },\n"
       "};",
       Style);
+
+  Style.SpacesInParens = FormatStyle::SIPO_Custom;
+  Style.SpacesInParensOptions.Other = true;
+  verifyFormat("Foo foo[] = {\n"
+               "    {1, 1},\n"
+               "    {1, 1},\n"
+               "};",
+               Style);
 }
 
 TEST_F(FormatTest, UnderstandsPragmas) {