[cherry-pick][Docker builds] Move from Miniconda to Miniforge (pytorch#158370) (pytorch#158756)

* [Docker builds] Move from Miniconda to Miniforge (pytorch#158370)

This is related to: https://www.anaconda.com/legal/terms/terms-of-service

Trying to fix outage with docker builds.
https://github.com/pytorch/pytorch/actions/runs/16298993712/job/46033590799

Rocm and XPU builds since they use Miniforge are not affected

```
pytorch#22 ERROR: process "/bin/sh -c bash ./install_conda.sh && rm install_conda.sh install_magma_conda.sh common_utils.sh /opt/conda/requirements-ci.txt /opt/conda/requirements-docs.txt" did not complete successfully: exit code: 1
------
 > [base 14/42] RUN bash ./install_conda.sh && rm install_conda.sh install_magma_conda.sh common_utils.sh /opt/conda/requirements-ci.txt /opt/conda/requirements-docs.txt:
11.93 CondaToSNonInteractiveError: Terms of Service have not been accepted for the following channels. Please accept or remove them before proceeding:
11.93     • https://repo.anaconda.com/pkgs/main
11.93     • https://repo.anaconda.com/pkgs/r
11.93
11.93 To accept a channel's Terms of Service, run the following and replace `CHANNEL` with the channel name/URL:
11.93     ‣ conda tos accept --override-channels --channel CHANNEL
```
Hence solution is:
1. using `` conda tos accept --override-channels --channel defaults``
2. use Miniforge instead of Miniconda.

Using solution 2.

Solution Tried that don't work:
1. Using ``CONDA_ALWAYS_YES = true ``

4. Using older version of miniconda
```
[Miniconda3-py310_25.5.1-0-Linux-x86_64.sh](https://repo.anaconda.com/miniconda/Miniconda3-py310_25.5.1-0-Linux-x86_64.sh)
```
Pull Request resolved: pytorch#158370
Approved by: https://github.com/seemethere

Co-authored-by: Eli Uriegas <[email protected]>

* Remove tos

---------

Co-authored-by: Eli Uriegas <[email protected]>

Author: atalman

.ci/docker/common/install_conda.sh

@@ -4,12 +4,8 @@ set -ex
 
 # Optionally install conda
 if [ -n "$ANACONDA_PYTHON_VERSION" ]; then
-  BASE_URL="https://repo.anaconda.com/miniconda"
-  CONDA_FILE="Miniconda3-latest-Linux-x86_64.sh"
-  if [[ $(uname -m) == "aarch64" ]] || [[ "$BUILD_ENVIRONMENT" == *xpu* ]] || [[ "$BUILD_ENVIRONMENT" == *rocm* ]]; then
-    BASE_URL="https://github.com/conda-forge/miniforge/releases/latest/download"  # @lint-ignore
-    CONDA_FILE="Miniforge3-Linux-$(uname -m).sh"
-  fi
+  BASE_URL="https://github.com/conda-forge/miniforge/releases/latest/download"  # @lint-ignore
+  CONDA_FILE="Miniforge3-Linux-$(uname -m).sh"
 
   MAJOR_PYTHON_VERSION=$(echo "$ANACONDA_PYTHON_VERSION" | cut -d . -f 1)
   MINOR_PYTHON_VERSION=$(echo "$ANACONDA_PYTHON_VERSION" | cut -d . -f 2)
@@ -21,7 +17,6 @@ if [ -n "$ANACONDA_PYTHON_VERSION" ]; then
       exit 1
       ;;
   esac
-
   mkdir -p /opt/conda
   chown jenkins:jenkins /opt/conda
 
@@ -54,8 +49,6 @@ if [ -n "$ANACONDA_PYTHON_VERSION" ]; then
     export SYSROOT_DEP="sysroot_linux-64=2.17"
   fi
 
-  # Please see: https://github.com/pytorch/pytorch/pull/158370#issuecomment-3084705725
-  export CONDA_PLUGINS_AUTO_ACCEPT_TOS="yes"
   # Install correct Python version
   # Also ensure sysroot is using a modern GLIBC to match system compilers
   as_jenkins conda create -n py_$ANACONDA_PYTHON_VERSION -y\