fix[devtools/standalone]: update webpack configurations (#26963)

## Summary
Overlooked when was working on
#26887.

- Added `webpack` packages as dev dependencies to `react-devtools-core`,
because it calls webpack to build
- Added `process` package as dev dependency, because it is injected with
`ProvidePlugin` (otherwise fails with Safari usage)
- Updated rule for sourcemaps
- Listed required externals for `standalone` build

Tested on RN application & Safari

DiffTrain build for commit 6c84b50.

Author: hoxyq

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-dev.js

@@ -23934,7 +23934,7 @@ function createFiberRoot(
   return root;
 }
 
-var ReactVersion = "18.3.0-canary-794b770db-20230622";
+var ReactVersion = "18.3.0-canary-6c84b505c-20230622";
 
 // Might add PROFILE later.
 

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-prod.js

@@ -8617,7 +8617,7 @@ var devToolsConfig$jscomp$inline_1031 = {
     throw Error("TestRenderer does not support findFiberByHostInstance()");
   },
   bundleType: 0,
-  version: "18.3.0-canary-794b770db-20230622",
+  version: "18.3.0-canary-6c84b505c-20230622",
   rendererPackageName: "react-test-renderer"
 };
 var internals$jscomp$inline_1230 = {
@@ -8648,7 +8648,7 @@ var internals$jscomp$inline_1230 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-canary-794b770db-20230622"
+  reconcilerVersion: "18.3.0-canary-6c84b505c-20230622"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_1231 = __REACT_DEVTOOLS_GLOBAL_HOOK__;

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-profiling.js

@@ -9043,7 +9043,7 @@ var devToolsConfig$jscomp$inline_1073 = {
     throw Error("TestRenderer does not support findFiberByHostInstance()");
   },
   bundleType: 0,
-  version: "18.3.0-canary-794b770db-20230622",
+  version: "18.3.0-canary-6c84b505c-20230622",
   rendererPackageName: "react-test-renderer"
 };
 var internals$jscomp$inline_1271 = {
@@ -9074,7 +9074,7 @@ var internals$jscomp$inline_1271 = {
   scheduleRoot: null,
   setRefreshHandler: null,
   getCurrentFiber: null,
-  reconcilerVersion: "18.3.0-canary-794b770db-20230622"
+  reconcilerVersion: "18.3.0-canary-6c84b505c-20230622"
 };
 if ("undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__) {
   var hook$jscomp$inline_1272 = __REACT_DEVTOOLS_GLOBAL_HOOK__;

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-dev.js

@@ -27,7 +27,7 @@ if (
 }
           "use strict";
 
-var ReactVersion = "18.3.0-canary-794b770db-20230622";
+var ReactVersion = "18.3.0-canary-6c84b505c-20230622";
 
 // ATTENTION
 // When adding new symbols to this file,

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-prod.js

@@ -642,4 +642,4 @@ exports.useSyncExternalStore = function (
   );
 };
 exports.useTransition = useTransition;
-exports.version = "18.3.0-canary-794b770db-20230622";
+exports.version = "18.3.0-canary-6c84b505c-20230622";

compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-profiling.js

@@ -645,7 +645,7 @@ exports.useSyncExternalStore = function (
   );
 };
 exports.useTransition = useTransition;
-exports.version = "18.3.0-canary-794b770db-20230622";
+exports.version = "18.3.0-canary-6c84b505c-20230622";
 
           /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */
 if (

compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/REVISION

@@ -1 +1 @@
-794b770dbd6be48d42438ea76911d32c37c7dd6e
+6c84b505c746cd86bf55bee36faa15240273c2ce