…(swaps) (#39747)

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## **Description**

Addressing bridge-input-group unit test flakiness

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## **Changelog**

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CHANGELOG entry: fix: wait for input value and fetch calls during unit
test execution (swaps)

## **Related issues**

Fixes:

## **Manual testing steps**

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## **Screenshots/Recordings**

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## **Pre-merge author checklist**

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- [ ] I've manually tested the PR (e.g. pull and build branch, run the
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<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Low risk because changes are limited to test timing/assertions;
primary risk is masking a real regression by relaxing an abort-call
assertion.
> 
> **Overview**
> Reduces flakiness in `bridge-input-group.test.tsx` by making
`fillSearchInput` wait until the search field reflects the expected
value (including cases where the UI transforms input, e.g. `SD` →
`USD`).
> 
> Updates the network-picker test to assert `handleFetch` call counts
within the `waitFor` block and removes the brittle expectation of the
exact `AbortController.abort` call arguments/order.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
8d0cfe1. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->