refactor(core): scope payment request text confirmation layouts

May be related to the following OOM:
https://github.com/trezor/trezor-firmware/actions/runs/24751684853/job/72416000050

[no changelog]

Author: romanz

core/src/trezor/ui/layouts/bolt/__init__.py

@@ -503,15 +503,13 @@ async def confirm_payment_request(
     title = TR.words__swap if is_swap(trades) else TR.words__confirm
 
     for t, text in texts:
-        await raise_if_not_confirmed(
-            trezorui_api.confirm_value(
-                title=t or title,
-                value=text,
-                is_data=False,
-                description=None,
-            ),
-            "confirm_payment_request",
-        )
+        with trezorui_api.confirm_value(
+            title=t or title,
+            value=text,
+            is_data=False,
+            description=None,
+        ) as obj:
+            await raise_if_not_confirmed(obj, "confirm_payment_request")
 
     menu_items: list[StrPropertyType] = []
     if recipient_address is not None:

core/src/trezor/ui/layouts/caesar/__init__.py

@@ -571,14 +571,12 @@ async def confirm_payment_request(
     title = TR.words__swap if is_swap(trades) else TR.words__confirm
 
     for t, text in texts:
-        await raise_if_not_confirmed(
-            trezorui_api.confirm_value(
-                title=t or title,
-                value=text,
-                description=None,
-            ),
-            "confirm_payment_request",
-        )
+        with trezorui_api.confirm_value(
+            title=t or title,
+            value=text,
+            description=None,
+        ) as obj:
+            await raise_if_not_confirmed(obj, "confirm_payment_request")
 
     menu_items = []
     if recipient_address is not None:

core/src/trezor/ui/layouts/delizia/__init__.py

@@ -509,15 +509,13 @@ async def confirm_payment_request(
     title = TR.words__swap if is_swap(trades) else TR.words__confirm
 
     for t, text in texts:
-        await raise_if_not_confirmed(
-            trezorui_api.confirm_value(
-                title=t or title,
-                value=text,
-                is_data=False,
-                description=None,
-            ),
-            "confirm_payment_request",
-        )
+        with trezorui_api.confirm_value(
+            title=t or title,
+            value=text,
+            is_data=False,
+            description=None,
+        ) as obj:
+            await raise_if_not_confirmed(obj, "confirm_payment_request")
 
     main_layout = trezorui_api.confirm_value(
         title=title,

core/src/trezor/ui/layouts/eckhart/__init__.py

@@ -472,15 +472,13 @@ async def confirm_payment_request(
     )
 
     for t, text in texts:
-        await raise_if_not_confirmed(
-            trezorui_api.confirm_value(
-                title=t or title,
-                value=text,
-                description=None,
-                verb=TR.buttons__confirm,
-            ),
-            "confirm_payment_request",
-        )
+        with trezorui_api.confirm_value(
+            title=t or title,
+            value=text,
+            description=None,
+            verb=TR.buttons__confirm,
+        ) as obj:
+            await raise_if_not_confirmed(obj, "confirm_payment_request")
 
     main_layout = trezorui_api.confirm_value(
         title=title,