[Cadence 1.0] Improve Migration

[turbolent]

Improve the migration in several ways. See individual commits.

Also contains #5499, so can be ignored

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 54.09982% with 515 lines in your changes are missing coverage. Please review.

Project coverage is 55.95%. Comparing base (752788a) to head (afeb436).

Files	Patch %	Lines
cmd/util/ledger/migrations/cadence_value_diff.go	48.36%	262 Missing and 22 partials ⚠️
cmd/util/ledger/migrations/prune_migration.go	0.00%	63 Missing ⚠️
...til/ledger/migrations/account_storage_migration.go	0.00%	45 Missing ⚠️
...util/ledger/migrations/cadence_values_migration.go	64.54%	28 Missing and 11 partials ⚠️
...execution-state-extract/execution_state_extract.go	73.63%	27 Missing and 2 partials ⚠️
cmd/util/ledger/migrations/merge.go	28.00%	16 Missing and 2 partials ⚠️
cmd/util/cmd/execution-state-extract/cmd.go	66.66%	10 Missing and 3 partials ⚠️
cmd/util/ledger/migrations/cadence.go	86.74%	10 Missing and 1 partial ⚠️
...md/util/ledger/migrations/transaction_migration.go	75.67%	6 Missing and 3 partials ⚠️
fvm/systemcontracts/system_contracts.go	0.00%	4 Missing ⚠️

Additional details and impacted files

@@                    Coverage Diff                     @@
##           feature/stable-cadence    #5479      +/-   ##
==========================================================
- Coverage                   56.00%   55.95%   -0.06%     
==========================================================
  Files                        1042     1045       +3     
  Lines                      102010   102968     +958     
==========================================================
+ Hits                        57134    57612     +478     
- Misses                      40526    40963     +437     
- Partials                     4350     4393      +43     

Flag	Coverage Δ
unittests	55.95% <54.09%> (-0.06%)	⬇️

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[turbolent]

@janezpodhostnik Added suggestion for #5484, #5484 (comment), in 1a966ce

[SupunS]

Mostly focused the cadence migrations related changes. LGTM!