Fix displayAccountNumber

[lukaw3d]

Broken since I rebased #990 over 3255d9b: it started displaying 0', 1', .. as account numbers

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ EDITORCONFIG	editorconfig-checker	4		0	0.07s
✅ REPOSITORY	checkov	yes		no	19.82s
✅ REPOSITORY	git_diff	yes		no	0.01s
✅ TSX	eslint	3	0	0	6.06s

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[codecov]

Codecov Report

Merging #1179 (0d612e3) into master (eb3b33d) will increase coverage by 0.11%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1179      +/-   ##
==========================================
+ Coverage   80.93%   81.05%   +0.11%     
==========================================
  Files         140      140              
  Lines        2639     2639              
  Branches      648      648              
==========================================
+ Hits         2136     2139       +3     
+ Misses        503      500       -3     

Flag	Coverage Δ
cypress	51.52% <100.00%> (ø)
jest	74.25% <100.00%> (+0.18%)	⬆️

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Impacted Files	Coverage Δ
...ge/Features/ImportAccountsSelectionModal/index.tsx	86.84% <ø> (ø)
...ponents/Toolbar/Features/AccountSelector/index.tsx	100.00% <100.00%> (ø)
src/app/state/account/saga.ts	88.67% <0.00%> (+5.66%)	⬆️