fix: Use current network name in Gas Breakdown tooltip

[darkwing]

Description

Fixes the GasBreakdownTooltip to use the current network name instead of the hardcoded "Ethereum network" text

Screen capture

Before

After

Test plan

Reproducing the error

1. Switch to any non-EthereumMainnet network
2. Go to Swaps
3. Select "to" and "from" tokens
4. Wait for the the gas estimate icon to display
5. Hover of the gas estimate icon to see the GasBreakdownTooltip
6. Ensure that the network name matches the current network

QA (ie manual testing)

• [ ] N/A

Devices

Automated testing

• [ ] Unit test
• [ ] Integration/E2E test

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Name	Status	Preview	Comments	Updated (UTC)
interface	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 12, 2023 1:51am

[codecov[bot]]

Codecov Report

Merging #7292 (75f12b3) into main (5fee3c6) will decrease coverage by 2.43%. The diff coverage is 100.00%.

:exclamation: Current head 75f12b3 differs from pull request most recent head 1bde62e. Consider uploading reports for the commit 1bde62e to get more accurate results

Flag	Coverage Δ
cloud-tests	87.27% <ø> (+3.66%)	:arrow_up:
unit-tests	40.28% <100.00%> (-2.54%)	:arrow_down:

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[just-toby]

this is a duplicate of #6979 but we'll probably merge whichever one updates first

[just-toby]

@darkwing can you rebase and fix conflicts?

[darkwing]

Updated as requested!