Fixes appeal tab issues

[tractorss]

closes #1414 , closes #1416

Issues fixed by this PR :

1. Appeal tab becomes active after period changes to Appeal, no need to reload
2. Explainer for stage 2, to show info about stage 1 's funded choice
3. Popup showing on user reject txn, now fixed
4. Fund button updated, better disabling conditions
5. Fixes fully funded option still selectable
6. Fixes fund input not editable in stage 2 appeal
7. Adds loading indicator while appeal data is loading, instead of showing "No option was funded" info

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PR-Codex overview

This PR focuses on refactoring the appeal feature in the CaseDetails page. It includes the following changes:

• Renamed the useLoserSideCountdownContext hook to useCountdownContext and added useWinnerSideCountdown hook.
• Updated imports and dependencies in multiple files.
• Added StageOneExplanation and StageTwoExplanation components.
• Updated the StageExplainer component to handle different stages.
• Updated the Tabs component to disable a tab based on certain conditions.
• Updated the Options component to use the useCountdownContext hook.
• Updated the StageOne component to use the useCountdownContext and useFundingContext hooks.
• Updated the StageTwo component to use the useCountdownContext, useFundingContext, and useOptionsContext hooks.
• Updated the ClassicAppealProvider component to use the useCountdownContext hook and provide the countdown values.
• Updated the useClassicAppealContext hook to export the useCountdownContext hook.
• Added the useWinnerSideCountdown hook.
• Updated the getDeadline function in the useClassicAppealContext hook.
• Updated the Fund component to use the useAccount, useBalance, and usePublicClient hooks.

The following files were skipped due to too many changes: web/src/pages/Cases/CaseDetails/Appeal/Classic/Fund.tsx

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[kemuru]

lgtm

[alcercu]

This is slightly inaccurate, for the current implementation of DisputeKitClassic the sum of funds is not considered, the only condition to make an appeal go through is to completely fund two options. So I would write something like this:
If the current winner is not fully funded in time, the option funded during the previous stage will be declared as the final winner.

[alcercu]

lgtm

[codeclimate]

Code Climate has analyzed commit a6beea5 and detected 3 issues on this pull request.

Here's the issue category breakdown:

Category	Count
Complexity	1
Style	2

View more on Code Climate.

[sonarqubecloud]

Quality Gate passed

The SonarCloud Quality Gate passed, but some issues were introduced.

2 New issues
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud