Standardize event handler naming to camelCase across evo components (#445)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>

Author: Copilot

packages/evo-marko/src/tags/evo-listbox/index.marko

@@ -41,7 +41,7 @@ export interface Input<Index extends number | string | undefined>
     ...htmlInput
     role="listbox"
     onKeyDown(e, target) {
-        rovTabindex.onKeydown(e);
+        rovTabindex.onKeyDown(e);
 
         const newIndex = typeahead(e);
         if (newIndex !== -1) {

packages/evo-marko/src/tags/evo-menu/index.marko

@@ -110,14 +110,14 @@ export interface Input<
                         rovTabindex.onClick(value);
                         (item.onClick || null)?.(e, target);
                     }
-                    onKeydown(e, target) {
-                        rovTabindex.onKeydown(e);
+                    onKeyDown(e, target) {
+                        rovTabindex.onKeyDown(e);
                         const newIndex = typeahead(e);
                         if (newIndex !== -1) {
                             rovTabindex.setFocusIndex(newIndex);
                         }
 
-                        (item.onKeydown || null)?.(e, target);
+                        (item.onKeyDown || null)?.(e, target);
                     }
                     data-value=value
                     tabindex=(rovTabindex.isFocused(value) ? 0 : -1)

packages/evo-marko/src/tags/evo-tabs/index.marko

@@ -38,7 +38,7 @@ export interface Input extends Marko.HTML.Div {
                     (tab.onClick || null)?.(e, target);
                 }
                 onKeyDown(e, target) {
-                    (rovingTabIndex.onKeydown || null)?.(e);
+                    (rovingTabIndex.onKeyDown || null)?.(e);
                     (tab.onKeyDown || null)?.(e, target);
                 }
                 tabindex=(rovingTabIndex.isFocused(i) ? 0 : -1)

packages/evo-marko/src/tags/tags/evo-expander/index.marko

@@ -85,7 +85,7 @@ export interface Input {
     onFocusOut() {
         open = false;
     },
-    onKeydown(e: KeyboardEvent) {
+    onKeyDown(e: KeyboardEvent) {
         if (e.key === "Enter" || e.key === " ") {
             open = true;
         }

packages/evo-marko/src/tags/tags/evo-roving-tabindex/index.marko

@@ -54,7 +54,7 @@ static function getValue(el: HTMLElement) {
         setSelected(value);
         focusValue = value;
     },
-    onKeydown(e: KeyboardEvent) {
+    onKeyDown(e: KeyboardEvent) {
         if (e.key === "Enter" || e.key === " ") {
             setSelected(focusValue);
         }