Set standard name for Cancel button, to align translations (#8914)

src/panels/lovelace/editor/hui-dialog-save-config.ts

@@ -127,7 +127,7 @@ export class HuiSaveConfig extends LitElement implements HassDialog {
           ? html`
               <mwc-button slot="primaryAction" @click=${this.closeDialog}
                 >${this.hass!.localize(
-                  "ui.panel.lovelace.editor.save_config.cancel"
+                  "ui.common.cancel"
                 )}
               </mwc-button>
               <mwc-button

src/translations/en.json

@@ -2823,7 +2823,6 @@
             "yaml_control": "To take control in YAML mode, create a YAML file with the name you specified in your config for this dashboard, or the default 'ui-lovelace.yaml'.",
             "yaml_config": "To help you start here is the current config of this dashboard:",
             "empty_config": "Start with an empty dashboard",
-            "cancel": "Never mind",
             "close": "Close",
             "save": "Take control"
           },