Run `testthat::snapshot_review('plotly-symbol/')` to review changes

[MLopez-Ibanez]

https://github.com/plotly/plotly.R/runs/6295712575?check_suite_focus=true#step:12:1691

Failure (test-plotly-symbol.R:58:3): Can specify a scale manually
Snapshot of path to 'plotly-symbol/plotly-symbol-symbol-manual.svg' has changed
Run testthat::snapshot_review('plotly-symbol/') to review changes
Backtrace:

 1. plotly expect_traces(p, 2, "symbol-manual")
      at test-plotly-symbol.R:58:2
 2. plotly:::expect_doppelganger_built(...)
      at test-plotly-symbol.R:4:2
 3. plotly:::expect_doppelganger(p, name, ...)
      at tests/testthat/helper-vdiffr.R:35:2
 4. testthat::expect_snapshot_file(path = path, name = file, cran = FALSE)
      at tests/testthat/helper-vdiffr.R:30:2