Fix memory leaks & data races in tests (#4772)

* Add a few pre-made sanitizer suppressions

* Test Sanitization: Fix threading issues

* Test Sanitization: Allow deletion of PubSub

We still don't delete it in main code, but this allows us to try
deleting it in tests.

* Test Sanitization: Fix some memory leaks

* fix gtest clang-tidy warning

* const emojis test :-)

.sanitizers/asan-suppressions

@@ -0,0 +1,2 @@
+# Ignore openssl issues
+interceptor_via_lib:libcrypto.so.3

.sanitizers/lsan-suppressions

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+# Ignore openssl issues
+leak:libcrypto.so.3
+leak:CRYPTO_zalloc

.sanitizers/tsan-suppressions

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+race:libdbus-1.so.3
+deadlock:libdbus-1.so.3
+race:libglib-2.0.so.0
+race:libgio-2.0.so.0
+
+# Not sure about these suppression
+# race:qscopedpointer.h
+# race:qarraydata.cpp
+# race:qarraydata.h
+# race:qarraydataops.h
+# race:libQt6Core.so.6
+# race:libQt6Gui.so.6
+# race:libQt6XcbQpa.so.6
+# race:libQt6Network.so.6
+
+# very not sure about this one
+# race:qstring.h

.sanitizers/ubsan-suppressions

@@ -0,0 +1,2 @@
+enum:NetworkResult.hpp
+enum:gtest.h