Move get_dexopts_supported_in_dex_merger into starlark.

Also no longer pass dexopts to create_dex_merger_actions, as the internal implementation effectively filters out everything other than --forceJumbo which is not set (and I'm pretty sure the correct flag is actually --force-jumbo)

PiperOrigin-RevId: 949341252
Change-Id: I9ac36eba58642628cde9a19894686c65eff61377

rules/dex.bzl

diff --git a/rules/dex.bzl b/rules/dex.bzl
index 96ea2a8..eacbb03 100644
--- a/rules/dex.bzl
+++ b/rules/dex.bzl
@@ -40,6 +40,10 @@
 # Previously this was exposed via the --dexopts_supported_in_incremental_dexing native flag.
 _DEXOPTS_SUPPORTED_IN_INCREMENTAL_DEXING = ["--no-optimize", "--no-locals"]
 
+# Dexing flags that are allowed in dex merger.
+# Previously this was exposed via the --dexopts_supported_in_dexmerger native flag.
+_DEXOPTS_SUPPORTED_IN_DEX_MERGER = ["--minimal-main-dex", "--forceJumbo"]
+
 _tristate = _attrs.tristate
 
 def _resource_set_for_monolithic_dexing(_os, _inputs_size):
@@ -80,7 +84,7 @@
         includes = incremental_dexopt_filter,
         needs_normalization = not should_optimize_dex,
     )
-    merger_dexopt_filter = list(ctx.fragments.android.get_dexopts_supported_in_dex_merger)
+    merger_dexopt_filter = list(_DEXOPTS_SUPPORTED_IN_DEX_MERGER)
     if should_optimize_dex:
         merger_dexopt_filter += _EXTRA_DEXOPTS_SUPPORTED_IN_OPTIMIZED_DEX
     merger_dexopts = _filter_dexopts(
@@ -198,7 +202,7 @@
             ctx,
             output = dexes,
             input = shards,
-            dexopts = dexopts,
+            dexopts = [],  # The internal impl filters out effectively everything, so just pass an empty list
             dexmerger = dexmerger,
             min_sdk_version = min_sdk_version,
         )