RFR: 7903652: JOL: Fix empty arrays visualization in LJV

[Aleksey Shipilev]

On Tue, 6 Feb 2024 08:51:38 GMT, Ivan Ponomarev <duke at openjdk.org> wrote:

> Currently, visualization of an empty array produces invalid DOT (see https://github.com/atp-mipt/ljv/issues/28)
> 
> The solution proposed is as discussed in that issue in 2021 (we now show array component type as well, also treating primitive types and "multidimensional" arrays correctly, that is `int[]`, `int[][]` etc).
> 
> This PR also changes the expected version of Java for LJV approval tests from 11 to 8 in order to simplify development of LJV as a part of JOL.

All right, no need to split, integrate as is.

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PR Comment: https://git.openjdk.org/jol/pull/57#issuecomment-1931497525