gnu: baloo: Fix build.

The substitute for removing a failing test did no longer work since
the way the test is included changed in v5.45.0: Formerly the test
has listed, now there is a separate statement for this test.

* gnu/package/kde-frameworks.scm((baloo)[arguments]<#phases>: Change
  substitute in phase 'remove-failing-test'.

gnu/packages/kde-frameworks.scm

@@ -2003,7 +2003,8 @@ gallons).")
            ;; This test fails on i686 and aarch64
            (lambda _
              (substitute* "autotests/unit/file/CMakeLists.txt"
-               (("metadatamovertest") ""))
+               (("^\\s*ecm_add_test\\(.* TEST_NAME metadatamovertest .*" line)
+                (string-append "# " line)))
              #t))
          (replace 'check
            (lambda _