Fully qualify std::move invocations to fix -Wunqualified-std-cast-call (

#4101)

Clang implemented a warning last year to detect bare `move` and `forward` calls, as they have the potential to be error prone: llvm/llvm-project@70b1f6d. This warning should be available in clang-15.

Signed-off-by: Jordan Rupprecht <rupprecht@google.com>

runtime/Cpp/runtime/src/misc/IntervalSet.cpp

@@ -37,7 +37,7 @@ IntervalSet& IntervalSet::operator=(const IntervalSet& other) {
 }
 
 IntervalSet& IntervalSet::operator=(IntervalSet&& other) {
-  _intervals = move(other._intervals);
+  _intervals = std::move(other._intervals);
   return *this;
 }