Revert "[fuchsia] Use SDK provided gn templates for d8"

This reverts commit 3111db91.

Reason for revert: This has runtime failures because including
cmx fragments isn't working ocrrectly. Still investigating why
this wasn't discovered by CQ.

Original change's description:
> [fuchsia] Use SDK provided gn templates for d8
>
> cr_fuchsia_package is deprecated in favor of using the Fuchsia
> SDK provided rules directly.
>
> This CL adds a cmx file specifically for v8_unittests. CMX
> files define fuchsia components, see
> https://chromium-review.googlesource.com/c/chromium/src/+/3529652
> for more info.
>
> Bug: chromium:1092804
> Change-Id: Ibf1d866ec6b94a0e1a7a7c7c443a6ee80e3b1042
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3537885
> Reviewed-by: Victor Gomes <victorgomes@chromium.org>
> Reviewed-by: Wez <wez@chromium.org>
> Reviewed-by: Camillo Bruni <cbruni@chromium.org>
> Commit-Queue: Bryant Chandler <bryantchandler@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79760}

Bug: chromium:1092804
Change-Id: Ib9a4d4f8e04c6cd7f3bd289e7c956b6115a77a25
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3572004
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Wez <wez@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Bryant Chandler <bryantchandler@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79860}

BUILD.gn

@@ -6055,23 +6055,17 @@ group("v8_archive") {
 if (is_fuchsia && !build_with_chromium) {
   import("//build/config/fuchsia/rules.gni")
 
-  fuchsia_component("d8_fuchsia_component") {
+  cr_fuchsia_package("d8_fuchsia_pkg") {
     testonly = true
-    manifest = "src/d8/d8.cmx"
-    data_deps = [ ":d8" ]
-    visibility = [ ":*" ]
-  }
-
-  fuchsia_package("d8_fuchsia_pkg") {
-    testonly = true
-    package_name = "d8"
-    deps = [ ":d8_fuchsia_component" ]
+    binary = ":d8"
+    manifest = "gni/v8.cmx"
+    package_name_override = "d8"
   }
 
   fuchsia_package_runner("d8_fuchsia") {
     testonly = true
     package = ":d8_fuchsia_pkg"
-    package_name = "d8"
+    package_name_override = "d8"
   }
 }
 

src/d8/d8.cmx

-{
-  "include": [
-    "build/config/fuchsia/test/minimum_capabilities.test-cmx",
-    "gni/v8.cmx"
-  ],
-  "program": {
-    "binary": "d8"
-  }
-}
\ No newline at end of file