include_index ignored in pl.from_pandas(pd.Series)

[gab23r]

Checks

• I have checked that this issue has not already been reported.
• I have confirmed this bug exists on the latest version of Polars.

Reproducible example

pd_series = pd.Series({"a": 1, "b":2}, name = "number").rename_axis(["letter"])
pd_series
# letter
# a    1
# b    2
# Name: number, dtype: int64

pl.from_pandas(pd_series, include_index=True)
shape: (2,)
# shape: (2,)
# Series: 'number' [i64]
# [
# 	1
# 	2
# ]

Log output

No response

Issue description

include_index is ignored if data is a pd.Series.
I think we should reset the index in pandas before converting to polars (or at least warn the user the include_index is ignored if a series is passed)

it is all in python, if the new behaviour is accepted, I can propose a PR.

Expected behavior

I would expect: pl.from_pandas(pd_series.reset_index()) to match pl.from_pandas(pd_series, include_index=True)

pl.from_pandas(pd_series.reset_index())
# shape: (2, 2)
# ┌────────┬────────┐
# │ letter ┆ number │
# │ ---    ┆ ---    │
# │ str    ┆ i64    │
# ╞════════╪════════╡
# │ a      ┆ 1      │
# │ b      ┆ 2      │
# └────────┴────────┘

Installed versions

--------Version info---------
Polars:              1.7.1
Index type:          UInt32
Platform:            macOS-14.1.1-x86_64-i386-64bit
Python:              3.11.6 (v3.11.6:8b6ee5ba3b, Oct  2 2023, 11:18:21) [Clang 13.0.0 (clang-1300.0.29.30)]

----Optional dependencies----
adbc_driver_manager  <not installed>
altair               <not installed>
cloudpickle          <not installed>
connectorx           <not installed>
deltalake            <not installed>
fastexcel            <not installed>
fsspec               <not installed>
gevent               <not installed>
great_tables         <not installed>
matplotlib           <not installed>
nest_asyncio         <not installed>
numpy                2.1.1
openpyxl             <not installed>
pandas               2.2.3
pyarrow              <not installed>
pydantic             <not installed>
pyiceberg            <not installed>
sqlalchemy           <not installed>
torch                <not installed>
xlsx2csv             <not installed>
xlsxwriter           <not installed>```

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