Fix tools with remote exec

Previously the shared libs that are part of implicit_deps were not
uploaded to remote exec spawns. I'm still confused about which one we
"should" be using here, but this seems to work.

Author: keith

mojo/toolchain.bzl

@@ -4,10 +4,10 @@ load("@rules_cc//cc/common:cc_info.bzl", "CcInfo")
 load("//mojo:providers.bzl", "MojoInfo", "MojoToolchainInfo")
 
 def _mojo_toolchain_impl(ctx):
-    tool_files = [ctx.attr.mojo[DefaultInfo].files]
-    for dep in ctx.attr.implicit_deps + ctx.attr.extra_tools + [ctx.attr.lld]:
+    tool_files = []
+    for dep in ctx.attr.implicit_deps + ctx.attr.extra_tools + [ctx.attr.lld, ctx.attr.mojo]:
         tool_files.append(dep[DefaultInfo].default_runfiles.files)
-        tool_files.append(dep[DefaultInfo].files_to_run)
+        tool_files.append(dep[DefaultInfo].files)
 
     copts = list(ctx.attr.copts)
     gpu_toolchain = ctx.toolchains["//:gpu_toolchain_type"]