[My Strategies] Add update indicator

[GrandSchtroumpf]

fix #1300

Add an indication that the state is updating in My Strategies page.
This happens only for update, not for the initial loading.

Updating.mp4

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[cloudflare-workers-and-pages]

Deploying carbon-app with    Cloudflare Pages

Latest commit:	28aedac
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[tiagofilipenunes]

LGTM, hope this improves e2e test stability

[Costa769]

• On the Ethereum app, the indicator is not displayed; despite making several deposits and withdrawals, the indicator does not appear.
• On the SEI app, the indicator is visible for only half a second. Perhaps we can extend its appearance by 1-2 seconds.

[tiagofilipenunes]

LGTM

[tiagofilipenunes]

fix #485 cc @Costa769

[GrandSchtroumpf]

@tiagofilipenunes it doesn't actually fix the issue since the indicator is now totally transparent. At this point, it's only for E2E.