Cleanups for future script crate split (#35987)

* script: Avoid direct impl blocks on generated dicts and unions.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* script: Remove references to codegen-specific import module.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Fix tidy.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

---------

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

components/script_bindings/codegen/Bindings.conf

@@ -673,10 +673,26 @@ DOMInterfaces = {
 }
 
 Dictionaries = {
+'AudioNodeOptions': {
+    'derives': ['Clone', 'Copy'],
+},
+
+'ChannelMergerOptions': {
+    'derives': ['Clone', 'Copy'],
+},
+
+'ConstantSourceOptions': {
+    'derives': ['Clone', 'Copy'],
+},
+
 'FontFaceDescriptors': {
     'derives': ['Clone', 'MallocSizeOf']
 },
 
+'GainOptions': {
+    'derives': ['Clone', 'Copy'],
+},
+
 'GPUCanvasConfiguration': {
     'derives': ['Clone']
 },
@@ -696,6 +712,18 @@ Dictionaries = {
 'HeadersInit': {
     'derives': ["Clone"],
 },
+
+'IIRFilterOptions': {
+    'derives': ['Clone'],
+},
+
+'StereoPannerOptions': {
+    'derives': ['Clone', 'Copy'],
+},
+
+'XRWebGLLayerInit': {
+    'derives': ['Clone', 'Copy'],
+},
 }
 
 Enums = {

components/script_bindings/codegen/CodegenRust.py

@@ -7334,6 +7334,7 @@ impl{self.generic} Clone for {self.makeClassName(self.dictionary)}{self.genericS
             "}\n"
             "\n"
             f"impl{self.generic} {selfName}{self.genericSuffix} {{\n"
+            "    #[allow(clippy::wrong_self_convention)]\n"
             "    pub(crate) unsafe fn to_jsobject(&self, cx: *mut JSContext, mut obj: MutableHandleObject) {\n"
             f"{CGIndenter(CGList(memberInserts), indentLevel=8).define()}    }}\n"
             "}\n"