fix: restore component toolchain usage and add it to wasm_validate rule

- Revert wasm_tools_actions.bzl to use wasm_tools_component_toolchain_type
- Add component toolchain to wasm_validate rule alongside regular toolchain
- This fixes both validate and rust component build targets

Author: avrabe

tools/bazel_helpers/wasm_tools_actions.bzl

@@ -24,8 +24,9 @@ def wasm_tools_action(ctx, operation, **kwargs):
     """
 
     # Get the WASM tools component from toolchain
-    wasm_tools_toolchain = ctx.toolchains["@rules_wasm_component//toolchains:wasm_tools_toolchain_type"]
-    wasm_tools_component_target = wasm_tools_toolchain.wasm_tools
+    wasm_tools_toolchain = ctx.toolchains["@rules_wasm_component//toolchains:wasm_tools_component_toolchain_type"]
+    wasm_tools_info = wasm_tools_toolchain.wasm_tools_info
+    wasm_tools_component_target = wasm_tools_info.wasm_tools_component
 
     if not wasm_tools_component_target:
         fail("WASM Tools Integration Component not available in toolchain")

wasm/wasm_validate.bzl

@@ -233,7 +233,10 @@ wasm_validate = rule(
             doc = "GitHub account to retrieve public keys from",
         ),
     },
-    toolchains = ["@rules_wasm_component//toolchains:wasm_tools_toolchain_type"],
+    toolchains = [
+        "@rules_wasm_component//toolchains:wasm_tools_toolchain_type",
+        "@rules_wasm_component//toolchains:wasm_tools_component_toolchain_type",
+    ],
     doc = """
     Validates a WebAssembly file or component with optional signature verification.