StartsWith: Explicitly construct matcher-typed strings from matchee parameter

The current implementation breaks for absl::string_view on gcc, c++14: https://godbolt.org/z/Tzd3q1fqx

Closes #4391

PiperOrigin-RevId: 575853981
Change-Id: I7b782598add480eb69d4ca27ea4a4bf5f758f6a3

googlemock/test/gmock-matchers-comparisons_test.cc

@@ -1769,6 +1769,15 @@ TEST(StartsWithTest, CanDescribeSelf) {
   EXPECT_EQ("starts with \"Hi\"", Describe(m));
 }
 
+TEST(StartsWithTest, WorksWithStringMatcherOnStringViewMatchee) {
+#if GTEST_INTERNAL_HAS_STRING_VIEW
+  EXPECT_THAT(internal::StringView("talk to me goose"),
+              StartsWith(std::string("talk")));
+#else
+  GTEST_SKIP() << "Not applicable without internal::StringView.";
+#endif  // GTEST_INTERNAL_HAS_STRING_VIEW
+}
+
 // Tests EndsWith(s).
 
 TEST(EndsWithTest, MatchesStringWithGivenSuffix) {