Record human/nation/bot conquests (#2949)

## Description:

Conquests are currently mixing all player types.

This is not ideal as people wonders why a 50 player game can lead to
hundred of kills.
Having separate records can also help with achievements and better
balancing.

This PR splits the conquests record into 3 categories: human, nations
and bots.

It is linked to this infra PR:
https://github.com/openfrontio/infra/pull/246

<img width="895" height="497" alt="image"
src="https://github.com/user-attachments/assets/66e49100-8114-4406-84ab-d9627355956d"
/>

While the recorded data make a distinction between bots/nations, it's
only displayed here as a single "bot" category.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

IngloriousTom

src/client/components/baseComponents/stats/PlayerStatsTree.ts

@@ -149,7 +149,7 @@ export class PlayerStatsTreeView extends LitElement {
       attacks: this.mergeStatArrays(base.attacks, next.attacks),
       betrayals: this.mergeStatValue(base.betrayals, next.betrayals),
       killedAt: this.mergeStatValue(base.killedAt, next.killedAt),
-      conquests: this.mergeStatValue(base.conquests, next.conquests),
+      conquests: this.mergeStatArrays(base.conquests, next.conquests),
       boats: this.mergeStatRecord(base.boats, next.boats),
       bombs: this.mergeStatRecord(base.bombs, next.bombs),
       gold: this.mergeStatArrays(base.gold, next.gold),
@@ -203,7 +203,7 @@ export class PlayerStatsTreeView extends LitElement {
       attacks: stats.attacks ? [...stats.attacks] : undefined,
       betrayals: stats.betrayals,
       killedAt: stats.killedAt,
-      conquests: stats.conquests,
+      conquests: stats.conquests ? [...stats.conquests] : undefined,
       boats: stats.boats ? { ...stats.boats } : undefined,
       bombs: stats.bombs ? { ...stats.bombs } : undefined,
       gold: stats.gold ? [...stats.gold] : undefined,