fix(core/modules): Prepare modules only once per runtime (#11015)

This commit changes module loading implementation in "deno_core"
to call "ModuleLoader::prepare" hook only once per entry point.

This is done to avoid multiple type checking of the same code
in case of duplicated dynamic imports.

Relevant code in "cli/module_graph.rs" was updated as well.

1 files changed, 3 insertions, 0 deletions

diff --git a/cli/tests/single_compile_with_reload_worker.ts b/cli/tests/single_compile_with_reload_worker.ts
new file mode 100644
index 000000000..103cafe20
--- /dev/null
+++ b/cli/tests/single_compile_with_reload_worker.ts
@@ -0,0 +1,3 @@
+console.log("Hello from worker");
+postMessage(null);
+close();