[FIX] web_editor: clear format not working properly

Before this commit:

The text moves back to the left side on remove format even if the direction rtl
is applied.

After this commit:

The text will not move to the left side on remove format if the direction rtl is
applied.

task-3482193

closes odoo/odoo#136849

X-original-commit: ff955e2cf74189a7cd4b175e8edfe5cfc8f31821
Signed-off-by: David Monjoie (dmo) <dmo@odoo.com>

addons/web_editor/static/src/js/editor/odoo-editor/src/commands/commands.js

@@ -389,11 +389,21 @@ export const editorCommands = {
         }
     },
     removeFormat: editor => {
+        const textAlignStyles = new Map();
+        getTraversedNodes(editor.editable).forEach((element) => {
+            const block = closestBlock(element);
+            if (block.style.textAlign) {
+                textAlignStyles.set(block, block.style.textAlign);
+            }
+        });
         editor.document.execCommand('removeFormat');
         for (const node of getTraversedNodes(editor.editable)) {
             // The only possible background image on text is the gradient.
             closestElement(node).style.backgroundImage = '';
         }
+        textAlignStyles.forEach((textAlign, block) => {
+            block.style.setProperty('text-align', textAlign);
+        });
     },
 
     // Align