fix(html-report): handle the missing link in the html ENV table.

[solaiys]

Handles the following 2 cases:

1. Config hyperlink — _update_environment_config_links previously decided which Environment row to link by checking whether the filename contained the substring "cluster"/"config". If there is no substring "cluster| config" the it will not show the link.

2. The argument parsing only handled the space-separated form (--cluster_file value), but not the equals form (--cluster_file=value), so the scan never matched and defaulted to "Not specified".

Added a shared helper cli_option_value(name, argv=None) in cvs/lib/report_plugins.py that
handles both --opt value and --opt=value, and used it in the two places that parsed sys.argv.

Both cases handled correctly (verified functionally):

• cli_option_value("--config_file", ...) returns the value for both --config_file=./a/b.json (equals) and --config_file ./c.json (space) forms.
• Environment table linking is now keyed by the recorded kind (cluster/config), not a filename substring — so a config whose name has no "config" token (e.g. mi325x_..._distributed.json) still gets a hyperlink. Confirmed: both Config File and Cluster File render <a href=...> cells .
• The config_/cluster_ bundle prefixes are retained (bundle hygiene), and _config_files now stores {"rel", "kind"} — all readers/writers (copy_config_files_to_bundle, _update_environment_config_links, the truthiness check) are consistent; no other consumer expects the old string form.

[amd-droy]

looks good to me.