Build: Disable maybe-uninitialized warning for GCC that incorrectly triggers with std::optional

(cherry picked from commit d93002f9a96a01258500ca7b5f03fe27e50a7155)

cmake/compiler/gcc/settings.cmake

@@ -34,7 +34,8 @@ if(WITH_WARNINGS)
       -Winvalid-pch
       -Wfatal-errors
       -Woverloaded-virtual
-      -Wno-missing-field-initializers) # this warning is useless when combined with structure members that have default initializers
+      -Wno-missing-field-initializers # this warning is useless when combined with structure members that have default initializers
+      -Wno-maybe-uninitialized)       # this warning causes many false positives with std::optional
 
   message(STATUS "GCC: All warnings enabled")
 endif()