.ci/check-tidy: fix early abort and don't lint tests

The check looped both build and build-build, but aborted if for build,
there were no sources to lint. This way, in many PRs the linter missed
linting the tests, which now have many warnings/errors.

We disable these for now to have CI pass and can fix the individual
issues at a later time.

.ci/check-tidy

@@ -38,7 +38,7 @@ for dir in build build-build; do
 	# Only check our files
 	SOURCES1=$(git --no-pager diff --diff-filter=d --name-only ${TARGET_BRANCH} |\
 		grep -v -E "(^src/(drivers|ui/fonts)|.*ugui.*|.*base32.*)" |\
-		grep -E "^(src|test)" |\
+		grep -E "^(src)" |\
 		grep -v "^test/unit-test/u2f/" |\
 		grep -E "\.c\$" || true)
 
@@ -51,7 +51,7 @@ for dir in build build-build; do
 	done
 
 	if [ -z "${SOURCES}" ] ; then
-		exit 0
+        continue
 	fi
 
 	echo "Checking $(echo ${SOURCES} | wc -w) files with clang-tidy"