Allow mixing transformRequest.setProtocol and thenForwardTo

Previously even if you provided a bare hostname with no protocol,
setProtocol was ignored. It's now used as long as no hostname is in the
URL.

Author: pimterry

src/rules/requests/request-rule-builder.ts

@@ -425,7 +425,9 @@ export class RequestRuleBuilder extends BaseRuleBuilder {
             ...options,
             transformRequest: {
                 ...options.transformRequest,
-                setProtocol: protocol as 'http' | 'https' | undefined,
+                ...(protocol ? {
+                    setProtocol: protocol as 'http' | 'https' | undefined
+                } : {}),
                 replaceHost: { targetHost: host }
             }
         }));