fix: stem dict replicates intent. Reduce edges also replicates entity.

[jesus-seijas-sp]

Pull Request Template

PR Checklist

• I have run npm test locally and all tests are passing.
• I have added/updated tests for any new behavior.
• If this is a significant change, an issue has already been created where the problem / solution was discussed: [N/A, or add link to issue here]

PR Description

When using stem dict, the intent was classified twice.
Reduce edges now takes into account that the developer can introduce the same text several times

[coveralls]

Pull Request Test Coverage Report for Build 1546

• 2 of 4 (50.0%) changed or added relevant lines in 2 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.07%) to 74.643%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
packages/ner/src/reduce-edges.js	0	2	0.0%

Files with Coverage Reduction	New Missed Lines	%
packages/ner/src/reduce-edges.js	1	31.94%

Totals
Change from base Build 1524:	-0.07%
Covered Lines:	4623
Relevant Lines:	5918

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💛 - Coveralls