[FIX] mail: guard mouseover handlers

Before this commit, some mouseenter and mouseleave
handlers were prone to raising a traceback due not
being properly guarded.

closes odoo/odoo#102652

X-original-commit: f0dafec5c17b0ae0c645156a253c5d93beea7372
Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>
Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>

addons/mail/static/src/models/emoji_category_view.js

@@ -17,12 +17,18 @@ registerModel({
          * @param {MouseEvent} ev
          */
         onMouseenter(ev) {
+            if (!this.exists()) {
+                return;
+            }
             this.update({ isHovered: true });
         },
         /**
          * @param {MouseEvent} ev
          */
         onMouseleave(ev) {
+            if (!this.exists()) {
+                return;
+            }
             this.update({ isHovered: false });
         },
     },

addons/mail/static/src/models/link_preview_card_view.js

@@ -11,12 +11,18 @@ registerModel({
          * Handles mouse enter event for the container of this element.
          */
         onMouseEnter() {
+            if (!this.exists()) {
+                return;
+            }
             this.update({ isHovered: true });
         },
         /**
          * Handles mouse leave event for the container of this element.
          */
         onMouseLeave() {
+            if (!this.exists()) {
+                return;
+            }
             this.update({ isHovered: false });
         },
     },

addons/mail/static/src/models/link_preview_image_view.js

@@ -11,12 +11,18 @@ registerModel({
          * Handles mouse enter event for the container of this element.
          */
         onMouseEnter() {
+            if (!this.exists()) {
+                return;
+            }
             this.update({ isHovered: true });
         },
         /**
          * Handles mouse leave event for the container of this element.
          */
         onMouseLeave() {
+            if (!this.exists()) {
+                return;
+            }
             this.update({ isHovered: false });
         },
     },

addons/mail/static/src/models/link_preview_video_view.js

@@ -11,12 +11,18 @@ registerModel({
          * Handles mouse enter event for the container of this element.
          */
         onMouseEnter() {
+            if (!this.exists()) {
+                return;
+            }
             this.update({ isHovered: true });
         },
         /**
          * Handles mouse leave event for the container of this element.
          */
         onMouseLeave() {
+            if (!this.exists()) {
+                return;
+            }
             this.update({ isHovered: false });
         },
     },

addons/mail/static/src/models/thread_view_topbar.js

@@ -303,7 +303,7 @@ registerModel({
          * @param {MouseEvent} ev
          */
         onMouseEnterTopbarThreadName(ev) {
-            if (!this.thread || !this.thread.isChannelRenamable) {
+            if (!this.exists() || !this.thread || !this.thread.isChannelRenamable) {
                 return;
             }
             this.update({ isMouseOverThreadName: true });
@@ -325,6 +325,9 @@ registerModel({
          * @param {MouseEvent} ev
          */
         onMouseEnterUserName(ev) {
+            if (!this.exists()) {
+                return;
+            }
             this.update({ isMouseOverUserName: true });
         },
         /**
@@ -333,6 +336,9 @@ registerModel({
          * @param {MouseEvent} ev
          */
         onMouseLeaveTopbarThreadName(ev) {
+            if (!this.exists()) {
+                return;
+            }
             this.update({ isMouseOverThreadName: false });
         },
         /**
@@ -341,6 +347,9 @@ registerModel({
          * @param {MouseEvent} ev
          */
         onMouseLeaveTopbarThreadDescription(ev) {
+            if (!this.exists()) {
+                return;
+            }
             this.update({ isMouseOverThreadDescription: false });
         },
         /**
@@ -349,6 +358,9 @@ registerModel({
          * @param {MouseEvent} ev
          */
         onMouseLeaveUserName(ev) {
+            if (!this.exists()) {
+                return;
+            }
             this.update({ isMouseOverUserName: false });
         },
         /**