chore: use strict mode for internal runtime, core, and op_crates js (#9391)

op_crates/web/08_text_encoding.js

@@ -23,6 +23,7 @@
 // OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 // OTHER DEALINGS IN THE SOFTWARE.
+"use strict";
 
 ((window) => {
   const core = Deno.core;