Replace 'userxx' with 'orgxx' in all test files when the user type is org (#27052)

Currently 'userxx' and 'orgxx' are both used as username in test files
when the user type is org, which is confusing. This PR replaces all
'userxx' with 'orgxx' when the user type is org(`user.type==1`).
Some non-trivial changes
1. Rename `user3` dir to `org3` in `tests/git-repositories-meta` 
2. Change `end` in `issue reference` because 'org3' is one char shorter
than 'user3'

![ksnip_20230913-112819](https://github.com/go-gitea/gitea/assets/70063547/442988c5-4cf4-49b8-aa01-4dd6bf0ca954)
3. Change the search result number of `user/repo2` because
`user3/repo21` can't be searched now

![ksnip_20230913-112931](https://github.com/go-gitea/gitea/assets/70063547/d9ebeba4-479f-4110-9a85-825efbc981fd)
4. Change the first org name getting from API because the result is
ordered by alphabet asc and now `org 17` is before `org25`
![JW8U7NIO(J$H
_YCRB36H)T](https://github.com/go-gitea/gitea/assets/70063547/f55a685c-cf24-40e5-a87f-3a2327319548)
![)KFD411O4I8RB5ZOH7E0
Z3](https://github.com/go-gitea/gitea/assets/70063547/a0dc3299-249c-46f6-91cb-d15d4ee88dd5)

Other modifications are just find all and replace all.
Unit tests with SQLite are all passed.

---------

Co-authored-by: caicandong <1290147055@qq.com>

tests/gitea-repositories-meta/org3/repo5.git/HEAD

@@ -0,0 +1 @@
+ref: refs/heads/master

tests/gitea-repositories-meta/org3/repo5.git/config

@@ -0,0 +1,6 @@
+[core]
+	repositoryformatversion = 0
+	filemode = true
+	bare = true
+	ignorecase = true
+	precomposeunicode = true

tests/gitea-repositories-meta/org3/repo5.git/description

@@ -0,0 +1 @@
+Unnamed repository; edit this file 'description' to name the repository.

tests/gitea-repositories-meta/org3/repo5.git/hooks/post-receive

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+ORI_DIR=`pwd`
+SHELL_FOLDER=$(cd "$(dirname "$0")";pwd)
+cd "$ORI_DIR"
+for i in `ls "$SHELL_FOLDER/post-receive.d"`; do
+    sh "$SHELL_FOLDER/post-receive.d/$i"
+done

tests/gitea-repositories-meta/org3/repo5.git/hooks/post-receive.d/gitea

@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+"$GITEA_ROOT/gitea" hook --config="$GITEA_ROOT/$GITEA_CONF" post-receive

tests/gitea-repositories-meta/org3/repo5.git/hooks/pre-receive

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+ORI_DIR=`pwd`
+SHELL_FOLDER=$(cd "$(dirname "$0")";pwd)
+cd "$ORI_DIR"
+for i in `ls "$SHELL_FOLDER/pre-receive.d"`; do
+    sh "$SHELL_FOLDER/pre-receive.d/$i"
+done

tests/gitea-repositories-meta/org3/repo5.git/hooks/pre-receive.d/gitea

@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+"$GITEA_ROOT/gitea" hook --config="$GITEA_ROOT/$GITEA_CONF" pre-receive

tests/gitea-repositories-meta/org3/repo5.git/hooks/update

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+ORI_DIR=`pwd`
+SHELL_FOLDER=$(cd "$(dirname "$0")";pwd)
+cd "$ORI_DIR"
+for i in `ls "$SHELL_FOLDER/update.d"`; do
+    sh "$SHELL_FOLDER/update.d/$i" $1 $2 $3
+done

tests/gitea-repositories-meta/org3/repo5.git/hooks/update.d/gitea

@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+"$GITEA_ROOT/gitea" hook --config="$GITEA_ROOT/$GITEA_CONF" update $1 $2 $3

tests/gitea-repositories-meta/org3/repo5.git/info/exclude

@@ -0,0 +1,6 @@
+# git ls-files --others --exclude-from=.git/info/exclude
+# Lines that start with '#' are comments.
+# For a project mostly in C, the following would be a good set of
+# exclude patterns (uncomment them if you want to use them):
+# *.[oa]
+# *~

tests/gitea-repositories-meta/org3/repo5.git/refs/heads/master

@@ -0,0 +1 @@
+2a47ca4b614a9f5a43abbd5ad851a54a616ffee6

tests/gitea-repositories-meta/org3/repo5.git/refs/heads/test_branch

@@ -0,0 +1 @@
+d22b4d4daa5be07329fcef6ed458f00cf3392da0