fix: export domhandler' Element from it's exports field

[AlbertAZ1992]

What is the motivation for this pull request?

Fix error when running with webpack build

bug fix

What is the current behavior?

Got Module Not Found error Package path ./lib/node is not exported from package ..../node_modules/domhandler

I found the related issue #252 (comment) and pr #296 , which exports the Element type of domhandler.

But domhandler has used exports field, only exports index files https://github.com/fb55/domhandler/blob/master/package.json#L13

 "exports": {
        "require": "./lib/index.js",
        "import": "./lib/esm/index.js"
    },

What is the new behavior?

Require Element directly from 'domhandler' index.

Error no longer appears and webpack build runs correctly

Checklist:

• Conventional Commits
• Tests
• Documentation
• Types

[codecov-commenter]

Codecov Report

Merging #565 (095b6a2) into master (44c078c) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #565   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            8         8           
  Lines          167       167           
  Branches        57        57           
=========================================
  Hits           167       167           

Impacted Files	Coverage Δ
index.js	100.00% <100.00%> (ø)

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[remarkablemark]

Released #567 (comment)