chromiumBeta: Fix the configuration phase

This fixes the following error:
configuring
ERROR at //infra/orchestrator/BUILD.gn:38:17: Could not read file.
  pydeps_file = "//third_party/blink/tools/merge_web_test_results.pydeps"
                ^--------------------------------------------------------
I resolved this to "/build/chromium-102.0.5005.27/third_party/blink/tools/merge_web_test_results.pydeps".
See //infra/orchestrator/BUILD.gn:37:1: whence it was called.
python_library("blink_merge_web_test_results_py") {
^--------------------------------------------------
See //BUILD.gn:89:5: which caused the file to be included.
    "//infra/orchestrator:orchestrator_all",
    ^--------------------------------------

It's a known upstream issue when building from the generated tarballs:
- https://bugs.chromium.org/p/chromium/issues/detail?id=1313361
- https://chromium-review.googlesource.com/c/chromium/src/+/3457503

pkgs/applications/networking/browsers/chromium/common.nix

@@ -162,7 +162,11 @@ let
       ./patches/widevine-79.patch
     ];
 
-    postPatch = ''
+    postPatch = optionalString (chromiumVersionAtLeast "102") ''
+      # Workaround/fix for https://bugs.chromium.org/p/chromium/issues/detail?id=1313361:
+      substituteInPlace BUILD.gn \
+        --replace '"//infra/orchestrator:orchestrator_all",' ""
+    '' + ''
       # remove unused third-party
       for lib in ${toString gnSystemLibraries}; do
         if [ -d "third_party/$lib" ]; then