fix account page date order

[upsuper]

In #2058, the journal returned from /account_report was incorrectly reversed, and consequently the sort value for date was wrong in the template.

This was a remnant from early iterations when the index was always derived from the order passed to the template. Later iteration changes it to explicitly pass the index when doing pagination, so non-paginated path was no longer affected, but the json path was not reverted accordingly.

This PR fixes the issue by making the two paths work more consistently through adding explicit index to account journal as well. This makes the journal template still always render in reverse chronological order but with the right date index passed in.

The diff of the snapshot is:

--- a	2025-09-24 10:41:50.855628847 +1000
+++ b	2025-09-24 10:41:55.255510019 +1000
@@ -12,7 +12,7 @@
  </li>
  <li class="transaction cleared">
  <p>
- <span class="datecell" data-sort-value="1"><a href="#context-ENTRY_HASH">2022-01-01</a></span>
+ <span class="datecell" data-sort-value="4"><a href="#context-ENTRY_HASH">2022-01-01</a></span>
  <span class="flag">*</span>
  <span class="description droptarget" data-entry="ENTRY_HASH" data-entry-date="2022-01-01" data-account-name="Assets:Cash">
  <strong class="payee"></strong>Buy
@@ -56,7 +56,7 @@
  </li>
  <li class="transaction cleared">
  <p>
- <span class="datecell" data-sort-value="2"><a href="#context-ENTRY_HASH">2022-01-01</a></span>
+ <span class="datecell" data-sort-value="3"><a href="#context-ENTRY_HASH">2022-01-01</a></span>
  <span class="flag">*</span>
  <span class="description droptarget" data-entry="ENTRY_HASH" data-entry-date="2022-01-01" data-account-name="Assets:Cash">
  <strong class="payee"></strong>Transfer
@@ -100,7 +100,7 @@
  </li>
  <li class="open ">
  <p>
- <span class="datecell" data-sort-value="3"><a href="#context-ENTRY_HASH">2022-01-01</a></span>
+ <span class="datecell" data-sort-value="1"><a href="#context-ENTRY_HASH">2022-01-01</a></span>
  <span class="flag">Open</span>
  <span class="description">
  <a href="/off-by-one/account/Assets:Cash/?conversion=at_value&amp;interval=day">Assets:Cash</a>
@@ -114,7 +114,7 @@
  </li>
  <li class="open ">
  <p>
- <span class="datecell" data-sort-value="4"><a href="#context-ENTRY_HASH">2022-01-01</a></span>
+ <span class="datecell" data-sort-value="0"><a href="#context-ENTRY_HASH">2022-01-01</a></span>
  <span class="flag">Open</span>
  <span class="description">
  <a href="/off-by-one/account/Assets:Commodity/?conversion=at_value&amp;interval=day">Assets:Commodity</a>

as you can see the sort value is now correct.

[upsuper]

Hey @yagebu, it's probably a serious regression, so I tend to think there is some urgency to fix it. Could you please take a quick look at this PR?

[kba977]

I’m also experiencing the same issue by this regression too, so I’d appreciate it if this could be fixed soon.

[yagebu]

Fixes #2113

[yagebu]

Thanks :)