Add Android support to shared GraphQL providers and codegen rule

Summary:
Extend the shared `GraphQLInfo` provider and `graphql_codegen` UDR rule to support both iOS and Android using platform-specific record types. Integrate into Android `graphql_library_defs.bzl` in hybrid mode alongside the legacy genrule chain.

Changes:
- Move `fbcode/buck2/prelude/apple/graphql.bzl` to `fbcode/buck2/prelude/graphql/graphql.bzl` (shared location in its own folder).
- Define `GraphQLiOSInfo` and `GraphQLAndroidInfo` as separate `record()` types, each containing the full set of fields for their platform. `GraphQLInfo` is a provider with two optional fields: `ios: GraphQLiOSInfo | None` and `android: GraphQLAndroidInfo | None`. Each instance is either iOS or Android, never a mix.
- Add `graphql_providers(ctx, deps)` as a single merged function for both platforms. iOS calls with `cxx_attr_deps`, Android calls with `ctx.attrs.deps`.
- Modify `tools/build_defs/graphql/rules/graphql_codegen.bzl`: Add `platform` attr ("ios" or "android") to select which record type to create. JSON output extracts fields from the platform-specific record via `_get_platform_info()` helper.
- Add `platform = "ios"` to existing iOS `graphql_codegen()` call sites.
- Modify `fbcode/buck2/prelude/android/android_library.bzl`: Append `graphql_providers(ctx, ctx.attrs.deps)` to propagate GraphQL providers through the Android dep graph.
- Integrate `graphql_codegen()` into `graphql_library_defs.bzl` with `platform = "android"`, passing Android-specific fields from `graphql_bad_practices` and `composition_mode` from the build config's `JAVA_INTERFACES` capability.
- Update all import paths to `prelude//graphql:graphql.bzl`.

Legacy targets (`_local_graphql_files`, `__collected_graphql_deps`, `_recursive_graphql_files`) remain unchanged -- this is additive/hybrid.

Reviewed By: rmaz

Differential Revision: D97816914

fbshipit-source-id: d26883231857ed1a2dd01aeb02c4b30690c05e75

Author: ginfung

prelude/android/android_library.bzl

@@ -16,6 +16,7 @@ load(
 )
 load("@prelude//android:android_toolchain.bzl", "AndroidToolchainInfo")
 load("@prelude//android:r_dot_java.bzl", "get_dummy_r_dot_java")
+load("@prelude//graphql:graphql.bzl", "graphql_providers")
 load("@prelude//java:java_library.bzl", "build_java_library")
 load(
     "@prelude//java:java_providers.bzl",
@@ -81,7 +82,7 @@ def android_library_impl(ctx: AnalysisContext) -> list[Provider]:
             manifest = ctx.attrs.manifest,
         ),
         merge_exported_android_resource_info(ctx.attrs.exported_deps),
-    ] + android_providers + [LabelInfo(labels = ctx.attrs.labels)]
+    ] + android_providers + [LabelInfo(labels = ctx.attrs.labels)] + graphql_providers(ctx)
 
 def optional_jars(ctx: AnalysisContext) -> list[Artifact]:
     if not ctx.attrs.android_optional_jars:

prelude/apple/apple_library.bzl

@@ -15,7 +15,6 @@ load("@prelude//:paths.bzl", "paths")
 load("@prelude//:validation_deps.bzl", "get_validation_deps_outputs")
 load("@prelude//apple:apple_dsym.bzl", "DSYM_SUBTARGET", "get_apple_dsym")
 load("@prelude//apple:apple_stripping.bzl", "apple_strip_args")
-load("@prelude//apple:graphql.bzl", "graphql_providers")
 # @oss-disable[end= ]: load("@prelude//apple/meta_only:apple_library_meta_validation.bzl", "apple_library_validate_for_meta_restrictions")
 # @oss-disable[end= ]: load("@prelude//apple/meta_only:linker_outputs.bzl", "extra_distributed_thin_lto_opt_outputs_merger", "get_extra_linker_output_flags", "get_extra_linker_outputs")
 load("@prelude//apple/mockingbird:mockingbird_types.bzl", "MockingbirdLibraryInfo", "MockingbirdLibraryInfoTSet", "MockingbirdLibraryRecord", "MockingbirdSourcesInfo", "MockingbirdTargetType")
@@ -94,6 +93,7 @@ load(
     "CPreprocessorInfo",  # @unused Used as a type
 )
 load("@prelude//cxx:target_sdk_version.bzl", "get_unversioned_target_triple")
+load("@prelude//graphql:graphql.bzl", "graphql_providers")
 load(
     "@prelude//linking:link_info.bzl",
     "ExtraLinkerOutputs",

prelude/apple/graphql.bzl prelude/graphql/graphql.bzlprelude/apple/graphql.bzl renamed to prelude/graphql/graphql.bzl

@@ -17,13 +17,24 @@ load(
     "cxx_attr_exported_deps",
 )
 
+GraphQLiOSInfo = record(
+    header_path_prefix = str | None,
+)
+
+GraphQLAndroidInfo = record(
+    allow_legacy_fragments = bool,
+    allow_type_models = bool,
+    composition_mode = str | None,
+    enable_associated_library = bool,
+)
+
 GraphQLInfo = provider(
     fields = {
         "config_name": provider_field(str),
         "enforce_colocation": provider_field(bool),
-        "header_path_prefix": provider_field(str | None),
         "is_subconfig": provider_field(bool),
         "is_test_target": provider_field(bool),
+        "platform_config": provider_field(GraphQLAndroidInfo | GraphQLiOSInfo),
         "srcs": provider_field(list[Artifact]),
         "target": provider_field(Label),
     },