fix(filter_include_changes): more accurate MOJOM_HEADER_REGEX

Author: dsanders11

filter_include_changes.py

@@ -16,7 +16,7 @@
 
 
 GENERATED_FILE_REGEX = re.compile(r"^out/[\w-]+/gen/.*$")
-MOJOM_HEADER_REGEX = re.compile(r"^.*.mojom[^.]*.h$")
+MOJOM_HEADER_REGEX = re.compile(r"^.*\.mojom[^\.]*\.h$")
 THIRD_PARTY_REGEX = re.compile(r"^(?:third_party\/(?!blink)|v8).*$")