Update Kedro API usage on Kedro-Viz

[ravi-kumar-pilla]

Description

This will be a follow up ticket to update usage of public Kedro APIs after the work done in kedro-org/kedro#4473

Context

With Kedro API polishing, few methods of Kedro are made public and can be used on Kedro-Viz. More information can be found in kedro-org/kedro#4473

Possible Implementation

• Remove private implementation of _is_project and _find_kedro_project from kedro_viz -> launchers -> utils.py and update it to use public Kedro methods is_kedro_project and find_kedro_project starting kedro 1.0.0
• Rename any instances of extra_params to runtime_params on Kedro-Viz

Checklist

• Include labels so that we can categorise your feature request