Make sure that symbol graph extraction and interface synthesis honor -Xcc flags that are derived from Bazel's --objccopt flags and from --compilation_mode. (#1566)

Without these, the symbol graph/synthesis invocation will not be able to
load explicit modules produced by the compiler when building
dependencies.

PiperOrigin-RevId: 803055033

Cherry-picks:
f79116b

Co-authored-by: Tony Allevato <[email protected]>

Author: luispadron

swift/toolchains/config/compile_config.bzl

@@ -1269,6 +1269,8 @@ def compile_action_configs(
                     SWIFT_ACTION_DERIVE_FILES,
                     SWIFT_ACTION_DUMP_AST,
                     SWIFT_ACTION_PRECOMPILE_C_MODULE,
+                    SWIFT_ACTION_SYMBOL_GRAPH_EXTRACT,
+                    SWIFT_ACTION_SYNTHESIZE_INTERFACE,
                 ],
                 configurators = [
                     lambda _, args: args.add_all(