Time series plot with period data type

Plotting time series with the data type Date works as expected
```
df1 = DataFrame(a=Date[Date("2023-10-20"), Date("2023-10-21"), Date("2023-10-22"), Date("2023-10-23")], b=Int[1, 2, 3, 2])
p1 = plot(df1, x=:a, y=:b)
```
Result:

But when using a Period data type such as Millisecond, Day, CompoundPeriod, ... the plot will appear blank
```
df2 = DataFrame(b=Millisecond[Millisecond(1000), Millisecond(2000), Millisecond(3000), Millisecond(4000)], a=Int[1, 2, 3, 2])
p2 = plot(df2, x=:a, y=:b)
```
```
startDate = Day(0)
df3 = DataFrame(b=Dates.CompoundPeriod[Dates.CompoundPeriod(startDate), Dates.CompoundPeriod(startDate + Day(1)), Dates.CompoundPeriod(startDate + Day(2)),Dates.CompoundPeriod(startDate + Day(3))], a=Int[1, 2, 3, 2])
p3 = plot(df3, x=:a, y=:b)
```
Result:

**Version info**
```
julia> versioninfo()
Julia Version 1.9.3
Commit bed2cd540a (2023-08-24 14:43 UTC)
Build Info:
Official https://julialang.org/ release
Platform Info:
OS: Windows (x86_64-w64-mingw32)
CPU: 8 × Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-14.0.6 (ORCJIT, ivybridge)
Threads: 1 on 8 virtual cores
Environment:
JULIA_EDITOR = code
JULIA_NUM_THREADS =
```

```
julia> using Pkg; pkg"status"
Status `... .julia\environments\v1.9\Project.toml`
[336ed68f] CSV v0.10.11
[a93c6f00] DataFrames v1.6.1
[864edb3b] DataStructures v0.18.15
[f0f68f2c] PlotlyJS v0.18.11
[2913bbd2] StatsBase v0.34.2
[fdbf4ff8] XLSX v0.10.0
```