Track wasm-port branch for kicad and wxwidgets submodules

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Co-Authored-By: Claude <noreply@anthropic.com>

.gitmodules

@@ -1,9 +1,11 @@
 [submodule "kicad"]
 	path = kicad
 	url = git@github.com:VV-EE/kicad-source-mirror.git
+	branch = wasm-port
 [submodule "wxwidgets"]
 	path = wxwidgets
 	url = git@github.com:VV-EE/wxWidgets.git
+	branch = wasm-port
 [submodule "wxWidgets-wasm-reference"]
 	path = wxWidgets-wasm-reference
 	url = git@github.com:ahilss/wxWidgets-wasm.git