Shift scroll only increase (#1625)

## Description:

Determine which scroll event delta, x or y, has the non zero value.
Use it to determine troop ratio increase or decrease.
Shift + Scroll can change scroll diretion from Y to X axis. If that is
enabled this change will still allow troop ratio increase / decrease

## 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
- [ ] I have added relevant tests to the test directory
- [ ] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [ ] I have read and accepted the CLA agreement (only required once).

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

richard012659

---------

Co-authored-by: Drills Kibo <59177241+drillskibo@users.noreply.github.com>

src/client/graphics/layers/EventsDisplay.ts

@@ -475,7 +475,6 @@ export class EventsDisplay extends LitElement implements Layer {
     const recipient = this.game.playerBySmallID(
       update.request.recipientID,
     ) as PlayerView;
-
     this.addEvent({
       description: translateText("events_display.alliance_request_status", {
         name: recipient.name(),