[Backport] 8333462: Performance regression of new DecimalFormat() when compare to jdk11

[lingjun-cg]

[Backport] 8333462: Performance regression of new DecimalFormat() when compare to jdk11

Summary: The DecimalFormat constructor calls DecimalFormatSymbols.findNonFormatChar(String,char) multiple times, and the lambda implementation is slow than plain loop implementation of DecimalFormatSymbols.findNonFormatChar(String,char).

Testing: All java.text.format jtreg.

Reviewers: D-D-H, Yude Lin

Issue: #79

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2 out of 13 committers have signed the CLA.

✅ lingjun-cg
✅ Accelerator1996
❌ Andrew Lu
❌ TheRealMDoerr
❌ tstuefe
❌ Delawen
❌ MBaesken
❌ chadrako
❌ mrserb
❌ shipilev
❌ martinuy
❌ jerboaa
❌ RealCLanger

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