[build] Hotfix CTest regex for MODULE.bazel build output (#22430)

CTestCustom.cmake.in

@@ -13,23 +13,9 @@ string(ASCII 27 ESC)
 # (i.e., [ without matching ]) and that element must be the last element of the
 # list.
 
-# "DEBUG" emitted by Bazel may be colored yellow (CSI 33m), "WARNING" emitted
-# by Bazel may be colored magenta (CSI 35m), and "warning" emitted by Clang may
-# be colored magenta (CSI 35m) and bolded (CSI 1m).
+# Never ever EVER _**EVER**_ should CTest fail the build of its own accord.
 list(APPEND CTEST_CUSTOM_ERROR_EXCEPTION
-  "^DEBUG: "
-  ": DrakeDeprecationWarning: "
-  ": SyntaxWarning: invalid escape sequence "
-  "^WARNING: "
-  ": warning: "
-  ":[0-9]+: Failure$"
-  "(^${ESC}\\[33mDEBUG|^${ESC}\\[35mWARNING|: ${ESC}\\[0m${ESC}\\[0\;1\;35mwarning): ${ESC}\\[0m"
-)
-
-# "ERROR" emitted by Bazel may be colored red (CSI 31m) and bolded (CSI 1m).
-list(APPEND CTEST_CUSTOM_ERROR_MATCH
-  "^ERROR: "
-  "^${ESC}\\[31m${ESC}\\[1mERROR: ${ESC}\\[0m"
+  ".*"
 )
 
 # Ignore various Mac CROSSTOOL-related warnings.