text: Title: Bug Report: Kurtosis at constant columns values
  Body: ### Current Behaviour
  
  I am trying to generate a report but it but it throws an error.
  
  ```
      187 descriptive_statistics = Table(
      188     [
      189         {
      190             "name": "Standard deviation",
      191             "value": fmt_numeric(summary["std"], precision=config.report.precision),
      192         },
      193         {
      194             "name": "Coefficient of variation (CV)",
      195             "value": fmt_numeric(summary["cv"], precision=config.report.precision),
      196         },
      197         {
      198             "name": "Kurtosis",
  --> 199             "value": fmt_numeric(
      200                 summary["kurtosis"], precision=config.report.precision
      201             ),
      202         },
  
  File /opt/conda/lib/python3.10/site-packages/ydata_profiling/report/formatters.py:232, in fmt_numeric(value, precision)
      221 @list_args
      222 def fmt_numeric(value: float, precision: int = 10) -> str:
      223     """Format any numeric value.
      224 
      225     Args:
     (...)
      230         The numeric value with the given precision.
      231     """
  --> 232     fmtted = f"{{:.{precision}g}}".format(value)
      233     for v in ["e+", "e-"]:
      234         if v in fmtted:
  
  TypeError: unsupported format string passed to NoneType.__format__
  ```
  I think it is because pyspark.sql.functions.kurtosis function returns None for constant columns
  
  ```
  df.select(kurtosis(df.column_name)).show()
  +--------------+
  |kurtosis(column_name)|
  +--------------+
  |          null   |
  +--------------+
  ```
  
  ### Expected Behaviour
  
  It was expected to generate the report.
  
  ### Data Description
  
  My data has two columns that all the values are constants.
  
  
  ### Code that reproduces the bug
  
  ```Python
  report_df = ProfileReport(df)
  ```
  
  
  ### pandas-profiling version
  
  4.1.2
  
  ### Dependencies
  
  ```Text
  pyspark==3.3.2
  ```
  
  
  ### OS
  
  Linux
  
  ### Checklist
  
  - [X] There is not yet another bug report for this issue in the [issue tracker](https://github.com/ydataai/pandas-profiling/issues)
  - [X] The problem is reproducible from this bug report. [This guide](http://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports) can help to craft a minimal bug report.
  - [X] The issue has not been resolved by the entries listed under [Common Issues](https://pandas-profiling.ydata.ai/docs/master/pages/support_contrib/common_issues.html).