Fixes#2425
## Changed
- Switch backend to primarily using number of browser windows rather
than scale multiplier (including migration to calculate `browserWindows`
from `scale` for existing workflows and crawls)
- Still support `scale` in addition to `browserWindows` in input models
for creating and updating workflows and re-adjusting live crawl scale
for backwards compatibility
- Adds new `max_browser_windows` value to Helm chart, but calculates the
value from `max_crawl_scale` as fallback for users with that value
already set in local charts
- Rework frontend to allow users to select multiples of
`crawler_browser_instances` or any value below
`crawler_browser_instances` for browser windows. For instance, with
`crawler_browser_instances=4` and `max_browser_windows=8`, the user
would be presented with the following options: 1, 2, 3, 4, 8
- Sets maximum width of screencast to image width returned by `message`
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Co-authored-by: Ilya Kreymer <ikreymer@gmail.com>
Co-authored-by: sua yoo <sua@suayoo.com>
Co-authored-by: Ilya Kreymer <ikreymer@users.noreply.github.com>
