ParaTimes: handle MAX value in transaction amount step

[buberdds]

• set max amount based on transaction type and/or custom fee
• extend form validation to include a case where user uses max button and later changes fee amount

[github-actions[bot]]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ EDITORCONFIG	editorconfig-checker	7		0	0.05s
✅ JSON	eslint-plugin-jsonc	1	0	0	1.16s
✅ JSON	jsonlint	1		0	0.28s
✅ JSON	prettier	1	0	0	0.75s
✅ JSON	v8r	1		0	1.98s
✅ REPOSITORY	checkov	yes		no	18.0s
✅ REPOSITORY	git_diff	yes		no	0.01s
✅ TSX	eslint	2	0	0	6.79s
✅ TYPESCRIPT	eslint	3	0	0	6.9s

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[codecov[bot]]

Codecov Report

Merging #988 (2df0953) into master (dc61073) will decrease coverage by 1.77%. The diff coverage is 95.23%.

:exclamation: Current head 2df0953 differs from pull request most recent head 6fe0754. Consider uploading reports for the commit 6fe0754 to get more accurate results

@@            Coverage Diff             @@
##           master     #988      +/-   ##
==========================================
- Coverage   85.59%   83.82%   -1.78%     
==========================================
  Files         140      121      -19     
  Lines        2638     2256     -382     
  Branches      648      544     -104     
==========================================
- Hits         2258     1891     -367     
+ Misses        380      365      -15     

Flag	Coverage Δ
cypress	51.64% <4.76%> (-4.84%)	:arrow_down:
jest	77.04% <95.23%> (+2.83%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/app/lib/helpers.ts	72.88% <ø> (+2.38%)	:arrow_up:
src/app/pages/ParaTimesPage/useParaTimes.ts	92.10% <ø> (ø)
...pp/pages/ParaTimesPage/TransactionAmount/index.tsx	95.00% <95.00%> (+1.45%)	:arrow_up:
src/app/lib/transaction.ts	67.05% <100.00%> (ø)
.../ParaTimesPage/ParaTimesPageInaccessible/index.tsx	33.33% <0.00%> (-66.67%)	:arrow_down:
src/app/pages/ParaTimesPage/index.tsx	6.45% <0.00%> (-48.39%)	:arrow_down:
src/types/errors.ts	50.00% <0.00%> (-16.67%)	:arrow_down:
...es/ParaTimesPage/TransactionAmount/FeesSection.tsx	83.33% <0.00%> (-16.67%)	:arrow_down:
src/app/lib/eth-helpers.ts	30.76% <0.00%> (-15.39%)	:arrow_down:
...pages/ParaTimesPage/TransactionRecipient/index.tsx	76.92% <0.00%> (-15.39%)	:arrow_down:
... and 52 more

[buberdds]

will restore ParaTime work in new PRs