[REF] web: RelationalModel: move _askChanges from record to model

_askChanges doesn't apply on a single record, it asks all fields
of all records of the current model to send their changes, so it
makes more sense to have this function on the model instead.

Part of task~3179751

Part-of: odoo/odoo#114024

addons/web/static/src/model/relational_model/record.js

@@ -135,7 +135,7 @@ export class Record extends DataPoint {
 
     async checkValidity() {
         if (!this._urgentSave) {
-            await this._askChanges();
+            await this.model._askChanges();
         }
         return this._checkValidity();
     }
@@ -190,7 +190,7 @@ export class Record extends DataPoint {
     }
 
     async isDirty() {
-        await this._askChanges();
+        await this.model._askChanges();
         return this.dirty;
     }
 
@@ -224,7 +224,7 @@ export class Record extends DataPoint {
     }
 
     async save(options) {
-        await this._askChanges();
+        await this.model._askChanges();
         return this.model.mutex.exec(() => this._save(options));
     }
 
@@ -317,13 +317,6 @@ export class Record extends DataPoint {
         this._setEvalContext();
     }
 
-    // FIXME: move to model?
-    _askChanges() {
-        const proms = [];
-        this.model.bus.trigger("NEED_LOCAL_CHANGES", { proms });
-        return Promise.all([...proms, this.model.mutex.getUnlockedDef()]);
-    }
-
     _checkValidity({ silent } = {}) {
         const unsetRequiredFields = [];
         for (const fieldName in this.activeFields) {

addons/web/static/src/model/relational_model/relational_model.js

@@ -223,6 +223,12 @@ export class RelationalModel extends Model {
         }
     }
 
+    _askChanges() {
+        const proms = [];
+        this.bus.trigger("NEED_LOCAL_CHANGES", { proms });
+        return Promise.all([...proms, this.mutex.getUnlockedDef()]);
+    }
+
     /**
      *
      * @param {Config} config

addons/web/static/src/model/relational_model/static_list.js

@@ -295,7 +295,7 @@ export class StaticList extends DataPoint {
 
     async leaveEditMode({ discard, canAbandon, validate } = {}) {
         if (this.editedRecord) {
-            await this.editedRecord._askChanges(false);
+            await this.model._askChanges(false);
         }
         return this.model.mutex.exec(async () => {
             if (this.editedRecord) {