DOC: Add search button and fix version switcher dev label

[skip azp] [skip cirrus]

Author: melissawm

doc/source/_static/numpy.css

@@ -14,7 +14,7 @@ body {
 
 /* Version switcher colors from PyData Sphinx Theme */
 
-.version-switcher__button[data-active-version-name*="dev"] {
+.version-switcher__button[data-active-version-name*="devdocs"] {
   background-color: var(--pst-color-warning);
   border-color: var(--pst-color-warning);
   opacity: 0.9;

doc/source/conf.py

@@ -251,19 +251,14 @@ def setup(app):
     ],
     "header_links_before_dropdown": 6,
     # Add light/dark mode and documentation version switcher:
-    "navbar_end": ["theme-switcher", "version-switcher", "navbar-icon-links"],
+    "navbar_end": ["search-button", "theme-switcher", "version-switcher", "navbar-icon-links"],
     "navbar_persistent": [],
     "switcher": {
         "version_match": switcher_version,
         "json_url": "https://numpy.org/doc/_static/versions.json",
     },
 }
 
-html_sidebars = {
-    "index": "search-button-field",
-    "**": ["search-button-field", "sidebar-nav-bs"],
-}
-
 html_title = "%s v%s Manual" % (project, version)
 html_static_path = ['_static']
 html_last_updated_fmt = '%b %d, %Y'