chore: Increase CryptoGetAccountBalance throttle

[kimbor]

Description:
Update CryptoGetAccountBalance throttle in previewnet, testnet, mainnet to the number of network nodes times 1,000,000 plus a buffer

Related issue(s):
Fixes #16850

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.64%. Comparing base (f881978) to head (6aeccdd).
Report is 8 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff             @@
##             develop   #16857   +/-   ##
==========================================
  Coverage      63.64%   63.64%           
  Complexity     20430    20430           
==========================================
  Files           2538     2538           
  Lines          94843    94843           
  Branches        9908     9908           
==========================================
  Hits           60362    60362           
  Misses         30877    30877           
  Partials        3604     3604           

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.00% (target: -1.00%)	✅ ∅

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (f881978)	97608	63776	65.34%
Head commit (6aeccdd)	97608 (+0)	63776 (+0)	65.34% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#16857)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[netopyr]

LGTM - thanks @kimbor