fix: remove tautology assertions in tests

[nogeenhenk]

Summary

Found by GitHub AI-powered bug detection.

tests/auto/settings/tst_settings.cpp

Fixed tautology assertions:

1. getProfilesEmpty(): Changed QVERIFY(profiles.isEmpty() || !profiles.isEmpty()) (always true) → QVERIFY(profiles.isEmpty())

2. getPassStore(): Changed QVERIFY(!store.isEmpty() || store.isEmpty()) (always true) → proper path validation

3. setAndGetClipBoardType(): Added assertion to verify getter returns the set value

4. setAndGetProfileDefault(): Changed tautology → proper equality check

tests/auto/util/tst_util.cpp

Fixed test issues:

1. checkConfig(): Removed tautology assertion, just call function to ensure it doesn't crash

2. getRecipientStringCount(): Added QCOMPARE(recipients, recipientsNoCount) to verify both API variants return same results

[coveralls]

coverage: 18.41% (+0.1%) from 18.29%
when pulling 4426a54 on fix/test-tautologies
into dcc19fe on main.