RFR: 8358533: Improve performance of java.io.Reader.readAllLines [v7]

[Brian Burkhalter]

On Fri, 27 Jun 2025 22:46:40 GMT, Xueming Shen <sherman at openjdk.org> wrote:

> [...] more in line with how resizing is handled in string builder

Looks like `StringBuilder` eventually calls `ArraysSupport.newLength(int,int.int)`. This is probably worth checking out.

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PR Review Comment: https://git.openjdk.org/jdk/pull/25863#discussion_r2172961020