Update JAVA_HOME Path and Shell Instructions for Newer macOS Versions

[ashanhr]

Description:
The current documentation on setting up JAVA_HOME for macOS needs updates to reflect differences in paths and shell environments across macOS versions.

• The specified JAVA_HOME path can vary based on the macOS version or the method used to install Java. It's better to mention this variability in the documentation rather than providing a specific path.
• Starting with macOS 10.15 Catalina, the default Terminal shell switched from bash (Bourne-again shell) to zsh (Z shell). The current documentation is based on bash, which is no longer the default shell.

Suggested Labels:
type/docs

Affected Product Version:
4.3.0