DAG Param incorrectly convert enum objects to strings

### Apache Airflow version

2.10.1

### If "Other Airflow 2 version" selected, which one?

_No response_

### What happened?

Using a DAG Param with a type of `object` and `enum` set to a list of possible objects is reflected as a string in Trigger DAG UI, both in the selector and in the underlying JSON.

When attempting to run the DAG using the value, the DAG will fail to run

### What you think should happen instead?

JSON schemas support enums of any type

> Elements in the array might be of any type, including null.

(source: https://json-schema.org/draft/2020-12/json-schema-validation#section-6.1.2-3) . They should be configurable and supported by DAG Parameters, and should allow for successful selection and execution of the DAG from the Trigger DAG UI.

### How to reproduce

Create the following DAG
```python
from airflow.decorators import dag, task
from pendulum import datetime
from airflow.models.param import Param

keys = ["a", "b", "c"]
values_display_list = [{"key": key, "value": key.upper()} for key in keys]

@dag(
start_date=datetime(2024, 1, 1),
schedule=None,
catchup=False,
params={
"x": Param(
values_display_list[0],
type=["object"],
enum=values_display_list,
),
},
tags=["example"],
)
def example_params():
@task
def example_params_task(*, params, **kwargs) -> None:
if params:
print(f"Params: {params}")
else:
print("No Params")

example_params_task()

# Instantiate the DAG
example_params()
```

### Operating System

Debian 12 (Bookworm)

### Versions of Apache Airflow Providers

apache-airflow==2.10.1+astro.1

### Deployment

Other Docker-based deployment

### Deployment details

Astro CLI running Astro Runtime 12.1.0

### Anything else?

I think this issue might be caused by the the trigger templating at https://github.com/apache/airflow/blob/2.10.2/airflow/www/templates/airflow/trigger.html#L77-L86

### Are you willing to submit PR?

- [ ] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

Start with airflow/www/templates/airflow/trigger.html at the trigger form code referenced in the report, then reproduce the example DAG with an object-valued Param and enum. Trace how the selected enum value is represented in the Trigger DAG UI and submitted; done means object values remain objects and the DAG runs successfully with the selected value.

Written by the indexing model from the issue text.