[FIX] web: fix new line in confirmation and alert dialog

Steps:
- Install studio.
- Open studio.
- Click on reset default view.

Issue:
- Confirmation dialog body display in single line instead in
multiple lines same thing happens in pos confirmation dialog
also in new friendly message task we need to display error
message in multiple line.

Cause:
- There is a style missing on body of that dialog to preserve
white spaces also need to use other tag then <t> to apply
proper style

Fix:
- Use <p> tag instead <t> tag and add `white-space:pre-wrap;`
to preserve space in that dialogs.

task-3356114

closes odoo/odoo#124953

Signed-off-by: Pierre Paridans (app) <app@odoo.com>

addons/web/static/src/core/confirmation_dialog/confirmation_dialog.xml

@@ -3,7 +3,7 @@
 
   <t t-name="web.ConfirmationDialog" owl="1">
     <Dialog size="'md'" title="props.title" modalRef="modalRef">
-      <t t-out="props.body" />
+      <p t-out="props.body" style="white-space: pre-wrap;"/>
       <t t-set-slot="footer" owl="1">
         <button class="btn btn-primary" t-on-click="_confirm" t-esc="props.confirmLabel"/>
         <button t-if="props.cancel" class="btn btn-secondary" t-on-click="_cancel" t-esc="props.cancelLabel"/>
@@ -13,7 +13,7 @@
 
   <t t-name="web.AlertDialog" owl="1">
     <Dialog size="'sm'" title="props.title" contentClass="props.contentClass">
-      <t t-out="props.body" />
+      <p t-out="props.body" style="white-space: pre-wrap;"/>
       <t t-set-slot="footer" owl="1">
         <button class="btn btn-primary" t-on-click="_confirm" t-esc="props.confirmLabel"/>
         <button t-if="props.cancel" class="btn btn-secondary" t-on-click="_cancel" t-esc="props.cancelLabel"/>