fix(module:input-number): fix errors before initialization

[simplejason]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Application (the showcase website) / infrastructure changes
[ ] Other... Please describe:

What is the current behavior?

Issue Number: #7525

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[ ] No

Other information

[zorro-bot]

This preview will be available after the AzureCI is passed.

[codecov]

Codecov Report

Merging #7531 (3b43fd8) into master (44d9770) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff            @@
##           master    #7531    +/-   ##
========================================
  Coverage   91.73%   91.74%            
========================================
  Files         502      502            
  Lines       16699    16699            
  Branches     2750     2604   -146     
========================================
+ Hits        15319    15320     +1     
+ Misses       1050     1048     -2     
- Partials      330      331     +1     

Impacted Files	Coverage Δ
...nents/input-number/input-number-group.component.ts	98.96% <ø> (ø)
components/input-number/input-number.module.ts	100.00% <ø> (ø)
components/input/input-group.component.ts	98.96% <ø> (ø)
components/input-number/input-number.component.ts	99.60% <100.00%> (ø)
components/input/input.directive.ts	98.57% <100.00%> (ø)
components/tabs/tab-nav-bar.component.ts	87.23% <0.00%> (-0.71%)	⬇️
components/table/src/table-data.service.ts	85.24% <0.00%> (+4.91%)	⬆️

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