[FW][FIX] Charts: fix incoherent panel state

[fw-bot]

Description:

This task aims to address some issues in the side panel of a chart:

1. When having only one point in a dataseries and selecting "First
   row as header", the point disappear from the chart (legit), but
   we don't have the possibility to uncheck this checkbox.
2. When having a normal dataset and another dataset containing one
   point, checking the "... as header" checkbox works has expected, but
   unchecking it don't make the 'one-point' dataset come back

Related Task:

Task: 3380568

Related Task(s):

• Task: 3380568

Review Checklist

• feature is organized in plugin, or UI components
• support of duplicate sheet (deep copy)
• in model/core: ranges are Range object, and can be adapted (adaptRanges)
• in model/UI: ranges are strings (to show the user)
• undo-able commands (uses this.history.update)
• multiuser-able commands (has inverse commands and transformations where needed)
• new/updated/removed commands are documented
• exportable in excel
• translations (_lt("qmsdf %s", abc))
• unit tested
• clean commented code
• track breaking changes
• doc is rebuild (npm run doc)
• status is correct in Odoo

Forward-Port-Of: #3576
Forward-Port-Of: #2929

[robodoo]

Pull request status dashboard.

[fw-bot]

@anhe-odoo @LucasLefevre cherrypicking of pull request #2929 failed.

stdout:

Auto-merging src/helpers/figures/charts/bar_chart.ts
Auto-merging src/helpers/figures/charts/chart_common.ts
Auto-merging src/helpers/figures/charts/line_chart.ts
Auto-merging src/helpers/figures/charts/pie_chart.ts
Auto-merging tests/components/charts.test.ts
Auto-merging tests/plugins/chart/__snapshots__/basic_chart.test.ts.snap
CONFLICT (content): Merge conflict in tests/plugins/chart/__snapshots__/basic_chart.test.ts.snap
Auto-merging tests/plugins/chart/basic_chart.test.ts

stderr:

15:02:48.994889 git.c:463               trace: built-in: git cherry-pick 7ff7295e85d663ad85a72118e6e056c0c1d0b690
error: could not apply 7ff7295e8... [FIX] chart: fix incoherent side_pannel state
hint: After resolving the conflicts, mark them with
hint: "git add/rm <pathspec>", then run
hint: "git cherry-pick --continue".
hint: You can instead skip this commit with "git cherry-pick --skip".
hint: To abort and get back to the state before "git cherry-pick",
hint: run "git cherry-pick --abort".
----------
status:

Either perform the forward-port manually (and push to this branch, proceeding as usual) or close this PR (maybe?).

In the former case, you may want to edit this PR message as well.

More info at https://github.com/odoo/odoo/wiki/Mergebot#forward-port

[anhe-odoo]

@fw-bot r+

[fw-bot]

@anhe-odoo I can only do this on unmodified forward-port PRs, ask robodoo.

[anhe-odoo]

@LucasLefevre : Can you r+ this one too ? Still the same FW-port chain. Thanks

[LucasLefevre]

robodoo r+