fix: allow overwriting a protocol's priority when selecting protocol (#1585)

Author: kuhe

smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/DirectedTypeScriptCodegen.java

@@ -141,6 +141,8 @@ private ProtocolGenerator resolveProtocolGenerator(
 
         for (TypeScriptIntegration integration : integrations) {
             for (ProtocolGenerator generator : integration.getProtocolGenerators()) {
+                // allow overrides of the same protocol ShapeId to change the order.
+                generators.remove(generator.getProtocol());
                 generators.put(generator.getProtocol(), generator);
             }
         }