Use the fast path for passing assertions in RunContext::handleNonExpr

`handleNonExpr` is responsible for handling assertions that do not
result in a decomposable expression, e.g. `REQUIRE_THROWS`, or
`REQUIRE_NOTHROW`.

Running benchmark on these two macros specifically, with
`REQUIRE_THROWS([](){ throw 1; }())`, and `REQUIRE_NOTHROW([](){}())`,
we get these speedups:

|         |  Debug | Release |
|---------|--------|---------|
| THROWS  |  3.69x |   2.10x |
| NOTHROW |  1.18x |   1.05x |

Obviously the actual performance improvement is dependent on
how expensive the expression under test is.

src/catch2/internal/catch_run_context.cpp

@@ -720,6 +720,11 @@ namespace Catch {
         AssertionResult assertionResult{ info, CATCH_MOVE( data ) };
 
         const auto isOk = assertionResult.isOk();
+        if ( isOk && !m_includeSuccessfulResults ) {
+            assertionPassedFastPath( info.lineInfo );
+            return;
+        }
+
         assertionEnded( CATCH_MOVE(assertionResult) );
         if ( !isOk ) {
             populateReaction(