Fix: Regression in the cmConditionEvaluator::HandleLevel0

As reported in the BUG #22524, mismatched parenthesis reported differently
for `while()` and `if()`.

The problem was in the double loop (over "handlers" and the arguments),
where the outer loop didn't check the result of the running handler.

Source/cmConditionEvaluator.cxx

@@ -260,11 +260,17 @@ bool cmConditionEvaluator::IsTrue(
   for (auto fn : handlers) {
     // Call the reducer 'till there is anything to reduce...
     // (i.e., if after an iteration the size becomes smaller)
+    auto levelResult = true;
     for (auto beginSize = newArgs.size();
-         (this->*fn)(newArgs, errorString, status) &&
+         (levelResult = (this->*fn)(newArgs, errorString, status)) &&
          newArgs.size() < beginSize;
          beginSize = newArgs.size()) {
     }
+
+    if (!levelResult) {
+      // NOTE `errorString` supposed to be set already
+      return false;
+    }
   }
 
   // now at the end there should only be one argument left

Tests/RunCMake/if/RunCMakeTest.cmake

@@ -9,6 +9,8 @@ run_cmake(duplicate-else-after-elseif)
 run_cmake(elseif-message)
 run_cmake(misplaced-elseif)
 
+run_cmake(unbalanced-parenthesis)
+
 run_cmake(MatchesSelf)
 run_cmake(IncompleteMatches)
 run_cmake(IncompleteMatchesFail)

Tests/RunCMake/if/unbalanced-parenthesis-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/if/unbalanced-parenthesis-stderr.txt

@@ -0,0 +1,8 @@
+CMake Error at unbalanced-parenthesis\.cmake:[0-9]+ \(if\):
+  if given arguments:
+
+    "NOT" "\(" "IN_LIST" "some_list"
+
+  mismatched parenthesis in condition
+Call Stack \(most recent call first\):
+  CMakeLists\.txt:[0-9]+ \(include\)

Tests/RunCMake/if/unbalanced-parenthesis.cmake

@@ -0,0 +1,8 @@
+set(var_with_paren "(")
+set(some_list "")
+
+if(NOT ${var_with_paren} IN_LIST some_list)
+  message(STATUS "Never prints")
+else()
+  message(STATUS "Never prints")
+endif()

Tests/RunCMake/while/RunCMakeTest.cmake

@@ -5,3 +5,5 @@ run_cmake(EndMissing)
 run_cmake(EndMismatch)
 run_cmake(EndAlone)
 run_cmake(EndAloneArgs)
+
+run_cmake(unbalanced-parenthesis)

Tests/RunCMake/while/unbalanced-parenthesis.cmake

@@ -0,0 +1,8 @@
+set(var_with_paren "(")
+set(some_list "")
+
+while(NOT ${var_with_paren} IN_LIST some_list)
+  message(STATUS "Never prints")
+endwhile()
+
+message(STATUS "It prints but in fact `while()` have to fail")