RFR: 8353013: java.net.URI.create(String) may have low performance to scan the host/domain name from URI string when the hostname starts with number [v3]

[Rohitash]

> `scanByte` throws `NumberFormatException` for URIs that start with numbers, e.g., https://11111111.x.y/
> The current flow is `parseIPv4Address` → `scanIPv4Address` → `scanByte`. `parseIPv4Address` uses `NumberFormatException` for control flow, so it captures the exception, ignores it, and returns -1. This has been reported by AWS customer to cause low performance. Details: [JDK-8353013](https://bugs.openjdk.org/browse/JDK-8353013) & https://github.com/aws/aws-sdk-java-v2/issues/5933
> 
> This PR avoids NumberFormatException by skipping calls to `Integer.parseInt` if the number of digits in the octet is > 3.
> 
> 
> I ran following tests.
> 
> make test-tier1
> make test-tier2
> make test TEST=jdk/java/net

Rohitash has updated the pull request incrementally with one additional commit since the last revision:

  improve jmh benchmark

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/24295/files
  - new: https://git.openjdk.org/jdk/pull/24295/files/07bff288..0164bcab

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24295&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24295&range=01-02

  Stats: 12 lines in 1 file changed: 4 ins; 4 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/24295.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24295/head:pull/24295

PR: https://git.openjdk.org/jdk/pull/24295