FuzzyTermEnums sets negative boost for fuzzy search & highlight [LUCENE-9568]

**Description**
When user indexes a word with an apostrophe and constructs a fuzzy query for highlighter, it throws an exception with set negative boost for a query. 

**Repro Steps**
1. Index a text with apostrophe. E.g. doesn't
1. Parse a fuzzy query e.g.: se\~, se\~2, se\~3
1. Try to highlight a text with apostrophe
1. The exception is thrown (for details see attached test test with repro steps)

**Actual Result**
`java.lang.IllegalArgumentException: boost must be a positive float, got -1.0`

**Expected Result**
- No exception.
- Highlighting marks are inserted into a text.

**Workaround**
- not known.

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Migrated from [LUCENE-9568](https://issues.apache.org/jira/browse/LUCENE-9568) by Juraj Jurčo, 1 vote, updated Oct 14 2020
Attachments: [FindSqlHighlightTest.java](https://apache.github.io/lucene-jira-archive/attachments/LUCENE-9568/FindSqlHighlightTest.java)

Start with the attached FindSqlHighlightTest.java and run its reproduction for an apostrophe-containing term such as "doesn't" with fuzzy queries se\~, se\~2, and se\~3. Trace the fuzzy-query and highlighter path that produces the negative boost exception. Done means the test no longer throws and highlighting marks are inserted into the text.

Written by the indexing model from the issue text.