Avoid using consensusGetGenesisDocument

[lukaw3d]

Genesis rarely changes, and it is pretty heavy.

Switch to consensusGetChainContext, stakingTokenSymbol, and hardcode min_delegation stakingConsensusParameters

[github-actions]

MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	1		0	0.06s
✅ EDITORCONFIG	editorconfig-checker	6		0	0.6s
✅ GIT	git_diff	yes		no	0.06s
✅ TSX	eslint	1	0	0	4.42s
✅ TYPESCRIPT	eslint	3	0	0	4.57s
✅ YAML	prettier	2	0	0	1.2s
✅ YAML	v8r	2		0	1.88s
✅ YAML	yamllint	2		0	0.16s

See errors details in artifact MegaLinter reports on CI Job page
Set VALIDATE_ALL_CODEBASE: true in mega-linter.yml to validate all sources, not only the diff

[tjanez]

This is very beneficial for lowering the gRPC server load!
Thanks, @lukaw3d!

[pro-wh]

fixes #280

[codecov]

Codecov Report

Merging #698 (bd4cf6f) into develop (fe3ee2b) will increase coverage by 0.09%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop     #698      +/-   ##
===========================================
+ Coverage    88.18%   88.27%   +0.09%     
===========================================
  Files           99       99              
  Lines         1616     1612       -4     
  Branches       306      305       -1     
===========================================
- Hits          1425     1423       -2     
+ Misses         191      189       -2     

Flag	Coverage Δ
cypress	60.19% <100.00%> (+0.02%)	⬆️
jest	73.67% <100.00%> (+0.05%)	⬆️

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

Impacted Files	Coverage Δ
src/app/state/network/index.ts	92.30% <ø> (ø)
src/app/state/network/saga.ts	95.45% <100.00%> (+6.99%)	⬆️

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