Cumulative Profit Chart is broken

[wassertim]

FreqUI Version

• Version of freqUI: latest
• version of freqtrade: NA

Describe the bug
As a user of frequi, I recently noticed, that the cumulative profit chart has gone broken. When you select a bot, it does not change and behaves strangely, not showing the actual performance of a selected bot.

I also found the cause. The last commit to the CumProfitChart is changing some typings and also property names from noMerge to notMerge. And that seems is breaking the feature.

chart.value?.setOption(chartOptionsLoc, { notMerge: true });

Here is the link to the commit:
304e0ac

To Reproduce
Steps to reproduce the behavior:

1. checkout main branch
2. run it locally with your trading bots
3. select one of your bots
4. See the cumulative chart

Expected behavior
The cumulative chart should show a performance of a bot after selecting it.

Screenshots

Desktop (please complete the following information):

• OS: NA
• Browser every browser
• Version NA

Smartphone (please complete the following information):

• Device: NA
• OS: NA
• Browser NA
• Version NA

Additional context
By reverting that commit, the issue can be fixed quickly. Should I create a PR?

[xmatthias]

Well the fun part is - the "noMerge" property was a spelling mistake (ported from other charts) - and never had any actual impact (as far as i could find, noMerge never existed on echarts).

Removing that line will be fine (see linked commit) - reverting the whole commit is not - as this does now provide some additional type-safety - allowing typescript to catch such mistakes (like - spelling mistakes).