fix(abc:pdf): fix ignore dependency pdfjs-dist

[cipchk]

Although pdfjs-dist is an optional dependency on canvas, Will be installed automatically when the dependency is installed by default; This requires a higher environment and often fails to install

PR Checklist

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• The commit message follows our guidelines: https://github.com/ng-alain/delon/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?

[ ] 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: N/A

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[ ] No

Other information

[ng-alain-bot]

Preview is ready!

[codecov]

Codecov Report

Merging #1641 (fabb21e) into master (26023ca) will not change coverage.
The diff coverage is 0.00%.

❗ Current head fabb21e differs from pull request most recent head bf2f451. Consider uploading reports for the commit bf2f451 to get more accurate results

@@           Coverage Diff           @@
##           master    #1641   +/-   ##
=======================================
  Coverage   95.57%   95.57%           
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  Files         281      281           
  Lines        8740     8740           
  Branches     1731     1731           
=======================================
  Hits         8353     8353           
  Misses        319      319           
  Partials       68       68           

Files Changed	Coverage Δ
packages/abc/pdf/pdf.component.ts	38.65% <0.00%> (ø)
packages/abc/pdf/pdf.types.ts	100.00% <ø> (ø)