[IMP] spreadsheet: Add class props to SpreadsheetShareButton

Make the share button style parametric as we use it in different
contexts.

closes odoo/odoo#139302

Task: 3329419
Related: odoo/enterprise#49302
Signed-off-by: Lucas Lefèvre (lul) <lul@odoo.com>

addons/spreadsheet/static/src/components/share_button/share_button.js

@@ -19,6 +19,7 @@ export class SpreadsheetShareButton extends Component {
     static props = {
         model: { type: Model, optional: true },
         onSpreadsheetShared: Function,
+        togglerClass: { type: String, optional: true },
     };
 
     setup() {
@@ -26,6 +27,10 @@ export class SpreadsheetShareButton extends Component {
         this.state = useState({ url: undefined });
     }
 
+    get togglerClass() {
+        return ["btn btn-light", this.props.togglerClass].join(" ");
+    }
+
     async onOpened() {
         const model = this.props.model;
         await waitForDataLoaded(model);

addons/spreadsheet/static/src/components/share_button/share_button.xml

@@ -3,7 +3,7 @@
 
   <t t-name="spreadsheet.ShareButton">
     <Dropdown
-      togglerClass="'btn btn-light'"
+      togglerClass="togglerClass"
       menuClass="'spreadsheet_share_dropdown d-flex flex-column'"
       position="'bottom-end'"
       onOpened.bind="onOpened"