perf(defs): remove redundant HashMap clone in diagnostics_notes extension

[soniseth0]

Removes unnecessary allocation by avoiding full HashMap clone when extending, diagnostics_notes collection in priv_module_data_helper.

[reviewable-StarkWare]

This change is 

[orizi]

Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion

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crates/cairo-lang-defs/src/db.rs line 985 at r1 (raw file):

        aux_data.extend(
            priv_module_data.aux_data.iter().map(|(file, aux_data)| (*file, aux_data.clone())),
        );

Suggestion:

        diagnostics_notes
            .extend(priv_module_data.diagnostics_notes.iter().map(|(k, v)| (*k, v.clone())));
        file_queue.extend(priv_module_data.files.keys().copied());
        plugin_diagnostics
            .extend(priv_module_data.plugin_diagnostics.iter().map(|v| (module_id, v.clone())));
        aux_data.extend(priv_module_data.aux_data.iter().map(|(k, v)| (*k, v.clone())));